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This year, Xiaomi 18 series adopted a new release model: Xiaomi 18 Pro and 18 Pro Max were released first in September, while the standard version was postponed. The top-of-the-line Xiaomi 18 Ultra was scheduled to be the last to be launched on December. All the new models were the first to feature the new flagship chip from Qualcomm, and they were the first to adopt the 2nm process from TSMC. The hardware performance has seen a significant upgrade.

In terms of performance, the entire lineup of Xiaomi 18 is equipped with the Qualcomm Snapdragon 8 Elite Gen6 series 2nm flagship chip. The new 2+3+3 eight-core architecture, combined with a 16MB ultra-large cache, has achieved comprehensive upgrades in performance and power consumption optimization. The versions are clearly distinguished, with the standard edition and Pro edition using the Snapdragon 8E6, focusing on balance and stability; the Pro Max enjoys the full-blooded Snapdragon 8E6 Pro+ LPDDR6 memory, with the GPU performance fully optimized, firmly occupying the top position in the annual Android performance tier.

However, the price increase of the new model is inevitable. The cost of the 2nm process has soared significantly, and the cost of the Snapdragon 8E6 Pro chip has risen by over 20%, exceeding $300. Coupled with the increase in storage prices and other factors, the original starting price of 4,499 yuan is basically unattainable. The trend of collective price hikes for Android flagship models has been fully realized in the Xiaomi 18 series.

In terms of configuration, the standard version of Xiaomi 18 is highly feature-rich. It is equipped with a 6.4-inch small-sized ultra-clear straight screen, featuring extremely narrow quadrilateral bezels and a large R-corner design, providing excellent hand feel and visual experience. The Pro series upgrades to a 2K ultra-clear screen and adds a hardware-level anti-spy function, balancing display quality and privacy protection.

The camera system has undergone an epic upgrade. The standard version of Xiaomi 18 is the first to feature a 3X telephoto lens + dual 200-megapixel ultra-large sensors. This completely resolves the long-standing shortcoming of the standard version lacking a telephoto lens. The top-of-the-line Pro Max is equipped with a brand-new Leica 200-megapixel main camera, supporting LOFIC HDR 3.0 ultra-high dynamic range. It can prevent overexposure in highlights and ensure clarity in low light, with full pixel ultra-fast focusing, resulting in a significant upgrade in the quality of the final images.

The battery life and all the detailed configurations are at full capacity. All models are equipped with a larger battery and support dual fast charging (100W wired + wireless). This eliminates the worry about battery life. At the same time, it comes with an ultrasonic fingerprint sensor and full-level water resistance, providing an excellent experience. The product selection is also very clear: The Pro series retains the classic back screen, while the standard version gives up the back screen in exchange for a larger battery, catering to different user needs.

The system experience will undergo a qualitative leap. Xiaomi 18 will come pre-installed with the brand-new Hyper OS 4.0. The new version thoroughly removes the residual code of MIUI， restructures the core modules using the Rust language， making the system more lightweight， faster to start， lower in power consumption， and more stable. At the same time， a new Liquid Glass UI is added， featuring a transparent and soft new visual style. Its appearance level is comparable to iOS， and it will also become the mainstream design trend in the industry in the future.

Overall, the Xiaomi 18 series is the generation of flagship phones that has made the most significant progress in addressing shortcomings and has the strongest overall capabilities in recent years. It features 2nm chips across the entire series, standard version telephoto lenses, and a completely restructured system. The upgrade is very sincere. However, the price increase due to rising costs has also made this new model a subject of controversy.

Some people believe that the price increase of flagship models is an inevitable trend in the industry. There are also long-time fans of Xiaomi who lament that Xiaomi no longer focuses on offering affordable and cost-effective products. However, it is undeniable that the all-round and flaw-free configuration has made Xiaomi 18 the most anticipated Android flagship this year in the second half of the year, and the overall product strength has achieved a complete upgrade.

The post Summary of Key Information for Xiaomi 18 Series Comes Here appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

Fortunately, Redmi Note series smartphones come with several built-in tools that make cleaning up junk files quick and easy. Whether you’re using a Redmi Note 12, Redmi Note 13, Redmi Note 14, or an earlier model running MIUI or HyperOS, this guide will help you free up storage and keep your device running smoothly.

Why Junk Files Accumulate on Redmi Phones

Junk files are created during normal smartphone usage. Common sources include:

• App cache files
• Temporary system files
• Installation APK packages
• Social media downloads
• Duplicate photos and videos
• Browser cache
• WhatsApp media files
• Unused app data
• Residual files from uninstalled applications

While these files are often necessary temporarily, they can accumulate over time and occupy several gigabytes of storage.

Method 1: Use the Built-in Security App Cleaner

The easiest and safest way to remove junk files on Redmi Note devices is through the built-in Security app.

Steps:

1. Open the Security app.
2. Tap Cleaner.
3. Allow the system to scan your device.
4. Review the detected junk files.
5. Tap Clean Up.

The Security app can remove:

• Cache files
• Obsolete installation packages
• Temporary files
• Memory residue
• System-generated junk

This method is recommended because it is officially integrated into MIUI and HyperOS.

Method 2: Clear App Cache

Individual apps often store large amounts of cache data.

To Clear Cache:

1. Open Settings.
2. Select Apps.
3. Tap Manage Apps.
4. Choose an app.
5. Tap Storage.
6. Select Clear Cache.

Apps that commonly accumulate large caches include:

• YouTube
• TikTok
• Instagram
• Facebook
• Chrome
• Spotify
• Netflix

Clearing cache typically does not delete personal data or account information.

Method 3: Remove Unused Applications

Many users install apps they rarely use.

To Uninstall Apps:

1. Open Settings.
2. Go to Apps.
3. Select Manage Apps.
4. Review installed applications.
5. Uninstall apps you no longer need.

Removing unused apps can free significant storage space and reduce background resource consumption.

Method 4: Clean WhatsApp Storage

WhatsApp is often one of the largest storage consumers on Redmi phones.

To Manage WhatsApp Storage:

1. Open WhatsApp.
2. Tap Settings.
3. Select Storage and Data.
4. Tap Manage Storage.
5. Review large files and forwarded media.
6. Delete unnecessary items.

Many users discover several gigabytes of old videos and photos stored within WhatsApp.

Method 5: Delete Downloaded Files

The Downloads folder often contains forgotten files.

Steps:

1. Open the File Manager app.
2. Navigate to Downloads.
3. Sort files by size.
4. Delete unwanted files, APKs, PDFs, and duplicate downloads.

Old installation packages can consume hundreds of megabytes without users realizing it.

Method 6: Remove Duplicate Photos and Videos

Photos and videos usually occupy the largest amount of storage.

Use Gallery Cleanup Tools:

1. Open Gallery.
2. Tap Albums.
3. Look for:
   • Duplicate photos
   • Similar photos
   • Screenshots
   • Large videos
4. Delete unnecessary items.

Regular photo maintenance can dramatically increase available storage.

Method 7: Clear Browser Data

Web browsers store temporary files and website data.

Chrome:

1. Open Chrome.
2. Tap the three-dot menu.
3. Select History.
4. Tap Clear Browsing Data.
5. Choose Cached Images and Files.
6. Confirm deletion.

This can recover a surprising amount of storage over time.

Method 8: Use Deep Clean Features

Many newer Redmi Note models running HyperOS include enhanced cleaning tools.

Access Deep Clean:

1. Open Security.
2. Select Deep Clean.
3. Review:
   • Large files
   • Duplicate files
   • Unused apps
   • Rarely used files
4. Delete unnecessary content.

Deep Clean provides more detailed storage analysis than the standard Cleaner tool.

Method 9: Transfer Files to Cloud Storage

If your device is running low on storage, consider moving files to cloud services such as:

• Google Drive
• Google Photos
• Dropbox
• OneDrive

Cloud storage helps free local storage while keeping files accessible.

Method 10: Restart Your Device Regularly

Many users overlook the benefits of restarting their phones.

Restarting:

• Clears temporary memory
• Closes background processes
• Refreshes system resources
• Improves overall responsiveness

A simple restart once every few days can help maintain smooth performance.

Tips to Prevent Future Storage Problems

To keep your Redmi Note running efficiently:

• Clean junk files weekly
• Uninstall unused apps regularly
• Enable cloud backup for photos
• Avoid downloading unnecessary files
• Clear app caches monthly
• Monitor storage usage through Settings

Regular maintenance prevents storage issues before they become noticeable.

Final Thoughts

Redmi Note series offers several effective built-in tools for managing storage and removing junk files. By using the Security app’s Cleaner feature, clearing app caches, managing WhatsApp media, removing duplicate files, and deleting unused applications, you can quickly recover valuable storage space and improve device performance.

A few minutes of maintenance each month can help your Redmi Note phone stay fast, responsive, and ready for everyday use. Whether you’re using an older Redmi Note model or the latest HyperOS-powered device, these cleanup methods will help maximize storage and extend the life of your smartphone.

The post How to Clean Up Junk Files on Redmi Note Series Mobile Phones? appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

Ultra-Short Throw Design

One of the standout features of the Xiaomi Mijia 1S is its ultra-short-throw projection system. Unlike traditional projectors that need to be mounted several meters away from the screen, the Mijia 1S can project a massive 100-inch image from approximately 24 cm (9.4 inches) away from the wall. With a throw ratio of just 0.23:1, users can enjoy screen sizes ranging from 80 to 150 inches while keeping the projector neatly positioned on a TV cabinet.

True 4K Resolution with Laser Projection

The projector features a native 4K resolution of 3840 × 2160 pixels, delivering exceptional detail and clarity for movies, sports, gaming, and streaming content. Powered by ALPD 3.0 laser display technology, the Mijia 1S produces bright and vivid images while maintaining excellent color accuracy and long-term reliability. Xiaomi rates the laser light source for up to 25,000 hours of operation, providing years of maintenance-free entertainment.

Brightness and Contrast Performance

With a brightness rating of 2,000 ANSI lumens, the Mijia 1S performs well in dimly lit and moderately bright rooms. The projector also features a 3,000:1 contrast ratio, helping deliver deeper blacks and improved shadow detail. While dedicated home theater environments will unlock its full potential, everyday viewing remains enjoyable even without complete light control.

HDR10 and MEMC Technology

To enhance image quality further, Xiaomi includes HDR10 support, which improves dynamic range and helps reveal more detail in both bright and dark scenes. The projector also incorporates MEMC (Motion Estimation and Motion Compensation) technology, reducing motion blur and improving smoothness during fast-moving sports broadcasts and action-packed films.

Immersive Audio Experience

The Mijia 1S is equipped with a built-in speaker system featuring multiple drivers for full-range and high-frequency sound reproduction. Bluetooth audio support allows the projector to connect with external speakers or soundbars, while USB and digital audio outputs provide additional flexibility for home theater setups.

Smart Features and Connectivity

Running on Xiaomi’s MIUI TV platform, the projector offers a smart TV-like experience with wireless connectivity and multimedia playback capabilities. The device supports dual-band Wi-Fi and Bluetooth 4.0 and includes a variety of physical ports such as HDMI, USB, LAN, SPDIF, AV input, and audio output. Users can also connect external streaming devices to access services such as Netflix and YouTube.

Key Specifications

• Native Resolution: 3840 × 2160 (4K UHD)
• Brightness: 2,000 ANSI Lumens
• Contrast Ratio: 3,000:1
• Display Technology: ALPD 3.0 Laser
• Throw Ratio: 0.23:1
• Screen Size: 80–150 inches
• HDR Support: HDR10
• Motion Enhancement: MEMC
• Operating System: MIUI TV / Android-based platform
• Memory: 2GB RAM + 16GB Storage
• Wireless Connectivity: Wi-Fi and Bluetooth 4.0
• Lamp Life: Up to 25,000 hours
• Audio: Integrated stereo speaker system
• Inputs: HDMI, USB, LAN, SPDIF, AV, Audio Out

Real-World User Feedback

The Xiaomi Mijia 1S has received positive feedback from many owners, particularly for its image quality, brightness, and value compared with competing ultra-short-throw laser projectors. Community discussions often highlight the upgrade from the earlier Xiaomi 4K model, noting improved brightness at 2,000 ANSI lumens and refinements to the overall design. Users frequently recommend pairing the projector with an Ambient Light Rejecting (ALR) screen for the best viewing experience.

Final Verdict

Xiaomi Mijia 1S 4K Cinema UST Projector delivers an impressive combination of cinematic image quality, ultra-short-throw convenience, and long-lasting laser performance. Its 4K resolution, HDR10 support, MEMC processing, and 150-inch projection capability make it a compelling alternative to large-screen televisions. For movie enthusiasts seeking a premium home theater experience without dedicating an entire room to projection equipment, the Mijia 1S remains one of the most attractive UST laser projectors in its class.

The post Xiaomi Mijia 1S 4K Cinema UST Projector Review: A Giant Home Theater in Minimal Space appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

In most cases, this is caused by background system activity, misconfigured settings, or software optimization issues rather than hardware defects.

Below is a complete guide to help you identify and fix the problem.

1. Check Battery Usage First

Before making changes, confirm what is draining your battery:

Go to:
Settings → Battery → Battery usage

Look for:

• “System”
• “Android OS”
• “MIUI / HyperOS services”

If system usage is consistently high (above 25–40%), optimization is needed.

2. Restart the Phone (Quick Fix)

A simple restart can immediately reduce system drain caused by:

• Stuck background processes
• Temporary system bugs
• Sync loops

Hold power button → Restart → check battery again after a few hours

3. Disable Unnecessary Background Autostart

Many system apps run in the background unnecessarily.

Steps:
Settings → Apps → Permissions → Autostart

Turn OFF for:

• Unused Xiaomi apps
• Third-party apps not needed for notifications

This reduces system wake-ups.

4. Limit Background Activity

Go to:
Settings → Battery → App battery saver

For high-drain apps:

• Set to “Restrict background activity”
• Or “Smart restrict”

This prevents system services from constantly waking apps.

5. Turn Off Always-On Network Scanning

System drain often comes from constant scanning.

Disable:

• Wi-Fi scanning
• Bluetooth scanning

Path:
Settings → Location → Location services → Disable scanning

6. Reduce Sync Frequency

Cloud and account sync can heavily affect system power usage.

Check:
Settings → Accounts & sync

You can:

• Turn off auto-sync for unused accounts
• Reduce sync frequency for Xiaomi Cloud, Gmail, etc.

7. Update System Software

Battery drain is often fixed in updates.

Go to:
Settings → About phone → System update

Install:

• MIUI updates
• HyperOS updates
• Security patches

Many “system drain” bugs are patched in updates.

8. Clear Cache Partition (Advanced Fix)

System cache corruption can increase battery usage.

Steps:

• Power off phone
• Enter recovery mode
• Select “Wipe cache”

This does NOT delete personal data.

9. Check for High Refresh Rate Impact

Redmi Note 13 supports high refresh rates, which increase system workload.

Try:

• Switch from 120Hz → 60Hz
  Path:
  Settings → Display → Refresh rate

If battery improves significantly, system load is partly display-related.

10. Disable Unnecessary System Features

Turn off features you don’t use:

• Always-on display
• Nearby device scanning
• NFC (if unused)
• AI assistant features
• Dynamic wallpapers

These contribute to background system activity.

11. Check for Rogue Apps Triggering System Drain

Sometimes system battery usage is actually caused by apps.

Look for:

• Social media apps running constantly
• VPN apps
• Poorly optimized games

Uninstall or restrict suspicious apps.

12. Factory Reset (Last Resort)

If nothing works, a reset may be needed:

Settings → About phone → Factory reset

Use this only if:

• System drain persists after updates
• Phone behaves abnormally
• Battery drops even in idle mode

Why “System” Uses So Much Battery on Redmi Note 13

Common causes include:

• MIUI/HyperOS background optimization
• Push notifications and sync loops
• Location and network scanning
• Software bugs after updates
• Aggressive system logging or indexing

Final Summary

If your Redmi Note 13 system consumes power too quickly, the issue is usually software-related and fixable. Start with simple steps like restarting, restricting background apps, and updating the system. If needed, move to deeper fixes like cache wiping or factory reset.

In most cases, users see noticeable improvement after adjusting background activity and updating the system.

The post What to Do If Redmi Note 13 System Consumes Power Too Quickly? appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

Compared to the release of Hyper OS 3 in August last year, the release schedule of the new generation system has been significantly accelerated. Hyper OS 4 will further deepen the ecological construction centered around artificial intelligence and will prioritize the improvement of operational efficiency as the core of the technological iteration.

It is known that the Xiaomi system team is conducting a thorough overhaul of the underlying system. Starting from Hyper OS 3.1, system applications such as weather and photo album have removed the MIUI SDK, and the upcoming Hyper OS 4 plans to completely eliminate all residual code from the MIUI era.

By shedding the heavy historical burdens, Hyper OS 4 will transform into a more pure and independent operating system. This profound slimming process implies a qualitative leap in the system’s running speed and response sensitivity， and the system performance will become more lightweight.
One of the core goals of this system reconfiguration is to ensure that mid-range and low-end models can also enjoy long-lasting smooth experiences. By redistributing hardware resources from the bottom layer, the new system effectively resolves the performance bottleneck issues faced by low-power processors in resource-constrained environments.

Even on 200usd phones and mid-range devices, Hyper OS 4 can offer an extremely smooth experience. This precise optimization of the resource scheduling mechanism will significantly enhance the daily usage experience of non-flagship devices， and extend the lifecycle of the system.

Following Xiaomi’s usual update strategy, apart from the flagship series Xiaomi 18, many older flagship models including Xiaomi 17 series will also receive compatibility updates successively. For the majority of Xiaomi users, this is undoubtedly a very anticipated experience upgrade.

The post Xiaomi 18 is launched! Hyper OS 4 is here: Completely Removes MIUI Code and undergoes a Complete Transformation at the Core Level appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

However, in 2026, two overseas devices continued to receive MIUI updates – Redmi A2 and Redmi A2+. The operating system of these two devices was Android 13, and they continued to receive security patches and minor version updates. Their last update was the firmware version V14.0.44.0.TGOMIXM released in December 2025. The official website mentioned that support would be discontinued on March 24, 2026.

Now, both devices have officially stopped all types of software updates, marking the complete discontinuation of the traditional MIUI.

MIUI was actually the first product of Xiaomi. It was released earlier than any of Xiaomi’s hardware products. It was first launched in August 2010 and was based on the Android 2.2 Froyo system. The early versions of MIUI were distributed as custom ROMs for third-party Android phones.

On October 17, 2023, Xiaomi announced the new operating system, Xiaomi HyperOS, and gradually replaced MIUI.

The post Xiaomi MIUI has officially ceased updates: The last two devices have stopped receiving support. This article reviews the 12-year 14-version history. appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

1. System-level Ad Blocker

Disable system tool advertisements
Go to “Settings” – “Xiaomi Account” – “Terms and Conditions” – “System Ads”, and turn off the “System Tools Ads” switch. This operation can block the promotional content in system applications such as weather, calendar, and file management, reducing the number of ad sources by approximately 60%.

2. Disable the User Experience Program

In the “Settings” – “Password and Security” – “System Security” section, disable the “Join User Experience Program” option. This feature collects user behavior data for advertising push purposes. Once disabled, the system will stop providing personalized advertising recommendations.

3. Pure Mode Deep Cleaning

Open “Settings” – “Special Features” and select “Clean Mode”. The system will automatically block advertisements from non-official app stores and restrict the operation of background advertisement processes. It should be noted that this mode may affect the normal functions of some third-party applications.

II. In-app Advertising Management

Special settings for pre-installed applications
Browser: Go to “Settings” – “Homepage Settings”, select “Simple Version”, and turn off “Grid Position Push” and “News Recommendation”.
App Store: In the “My” – “Settings” – “Privacy Settings” section, disable “Personalized Recommendations”, as well as “App Update Reminders” and “Related Recommendations”.
– Theme Wallpaper: By going to “My” – “Privacy Settings”, disable “Personalized Content Recommendations” to prevent advertisements from being inserted into the wallpaper library.

2. Third-party application permission control

For video and shopping applications, in the “Application Information” – “Permission Management” section, disable “Screen Lock Display” and “Background Pop-up Interface”. For instance, after disabling the “Screen Lock Permission” for a certain video application, its pop-up advertisements will no longer be able to be displayed on the lock screen.

III. Notification and Permission Optimization

Notification classification management
In the “Settings” – “Notifications and Control Center” – “Notification Management” section, set the notification permissions for non-essential applications (such as games and shopping) to “Not Allowed”. In particular, disable the “Marketing Notifications” and “Promotional Messages” categories, which can reduce the number of notification bar advertisements by over 80%.

2. Intelligent service process termination

Go to “Settings” – “Privacy Protection” – “Special Permission Settings” – “Display on top of other apps”, then find the “Smart Services” app and disable its permissions. This service is the core process for MIUI’s ad push. Once disabled, system-level ads will significantly decrease.

3. Data network access restrictions

For applications in the advertising-prone areas (such as news and short videos), in the “Application Information” – “Network Control” section, only the “WLAN” permission should be retained. When using mobile data, these applications will be unable to load the advertising content, but it will not affect the use of basic functions.

Advanced Technique: Deep Cleaning with ADB Commands

For technical users, they can connect their mobile phones to computers to execute ADB commands to completely remove the system advertisement components. For instance, entering `pm uninstall -k –user 0 com.miui.systemAdSolution` can uninstall the system advertisement service module. This method requires enabling USB debugging mode. It is recommended to back up important data before proceeding with the operation.

By combining the above methods, the advertising interference of Redmi K90 Pro Max can be reduced by over 90%. Users can choose to adopt some or all of the solutions according to their actual needs, ensuring system security while achieving a clean and smooth usage experience.

The post How to Turn off the Ads on Redmi K90 Pro Max? appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

Based on the current progress, Hyper OS 3.1 has begun to remove the MIUI SDK from some system modules such as weather and photo album. This indicates that Hyper OS 4， which is expected to be released in August 2026， will become the first truly zero-residue iteration version of MIUI. At that time， all the residual codes accumulated from the initial MIUI stage until now will be completely removed.

This transformation brought a qualitative change in technology for Xiaomi, marking that Hyper OS 4 would exist as a completely independent operating system, completely shedding its status as a derivative version of MIUI. With the removal of the heavy historical burden， the smoothness and response speed of the system are expected to undergo a qualitative leap.

In the Hyper OS 3.1 version, some forward-looking attempts can already be observed, such as the reconfiguration of the core system applications using Google’s Flutter toolkit and the Rust language. This not only indicates that Hyper OS is moving towards a modular application architecture, but also represents a bold innovation in the underlying logic of Xiaomi.

By introducing the Flutter engine, Hyper OS 4 will achieve standardization of UI rendering and logical stability across the entire system’s partitions, thereby replacing the fragmented Java or Kotlin legacy structures present in earlier versions. This deep restructure demonstrates that Xiaomi is attempting to fundamentally address the long-standing problems of lag and fragmentation in the Android system.

For the majority of users, older models and entry-level, mid-range devices will be the biggest beneficiaries. By completely eliminating those bloated legacy processes, the new system directly addresses the resource bottleneck issues that low-end processors often encounter in environments with limited memory. Even under conditions where hardware performance is limited, the Pengpai OS 4 can still bring significant improvements in smoothness for these devices.

The post Xiaomi Hyper OS 4 undergoes a major upgrade: Completely eliminates old code and boosts smoothness. appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.

I. Reset to Factory Settings: Applicable to regular scenarios where the BL lock has not been unlocked.
If the Bootloader (BL lock) of the mobile phone is not unlocked and the target version is only slightly different from the current version, a basic rollback can be achieved by restoring the factory settings. This method is simple to operate, but please note the following steps:

Data backup: Through “Settings – My Device – Backup and Restore”, contact information, photos, documents, etc. can be backed up to Xiaomi Cloud or a computer. If the phone has an SD card inserted, it is necessary to remove it in advance to avoid accidental deletion.
2. Enter Recovery Mode: After powering off the device, press and hold the “volume down + power button” for 10 seconds. Wait for the phone to vibrate and then release the button. This will bring you to the Fastboot interface. Use the volume keys to select “Recovery Mode”, and after entering, choose “Clear Data – Factory Reset”.
3. Wait for the system rollback: The phone will automatically delete the current system and install the factory-installed version. The entire process takes approximately 15 minutes. After the restoration is complete, you will need to reconfigure basic settings such as language and Wi-Fi.
Notes: This method is only applicable for version rollbacks within the same major version (e.g., reverting from MIUI 15.0.1 to 15.0.0). If you attempt a cross-version operation (such as reverting from MIUI 15 to MIUI 14), it may result in the system not starting.

II. Manual Replacement of System Packages: Suitable for precise downgrade when BL lock has been unlocked
For users who have unlocked the BL lock, they can achieve precise downgrade by replacing the system update package. This method requires downloading the target version package and manually triggering the installation:
Download the target version package: Obtain the old version system package that matches the Redmi K90 from the official Xiaomi community or a third-party ROM site (make sure the version number is compatible with the hardware).
2. Rename and Replace: Rename the downloaded ZIP file to “download_rom.zip” and then move it to the “/download_rom” directory on the phone.
3. Trigger system verification: Go to “Settings – My Device – MIUI Version”, click the upper right menu and select “Manually Select Installation Package”. The system will automatically verify and install the previous version.
4. Clear data and restart: After installation, in the Recovery mode, select “Clear data” to avoid system abnormalities caused by cache conflicts.
Risk Warning: If the replacement process is interrupted or the package name is incorrect, it may cause the device to brick. It is recommended to keep the phone’s battery level above 50% throughout the process and turn off the “System Automatic Update” function before operating.

III. Retracing of the Line Brush Tool: The Ultimate Solution
When the above methods fail, the wire brush is the ultimate solution to restore to the original version. This method requires unlocking the BL lock and using professional tools. The operation steps are as follows:
Unlock BL lock: Apply for unlocking permission through the official website of Xiaomi Unlock Tool. After waiting for the 72-hour review period, connect the computer in Fastboot mode to perform the unlocking process.
2. Enter EDL mode: After powering off, press and hold the “volume down + power button” to enter Fastboot mode. Then, use the data cable to short-circuit the test points to trigger the EDL (Emergency Download Mode).
3. Flashing the old version: Open the official Xiaomi flashing tool (MiFlash), select the path of the line flashing package that matches the Redmi K90, click “Refresh” to identify the device, and then proceed with the flashing process. The entire process takes approximately 5 minutes.
4. Initial Setup: After the device is flashed, it will automatically restart to the initial settings interface. You will need to reconfigure the language, Wi-Fi, and other parameters.
Technical requirements: The line brush operation requires entering the EDL mode and involves hardware short-circuiting. For beginners, it is recommended to seek assistance from Xiaomi’s after-sales service or professional repair shops to complete the operation.

Key Considerations: 
Data Security: Before any operation, make sure to back up the data to prevent data loss due to system rollback.
2. Version Compatibility: Downgrading across major version numbers may cause system instability. It is recommended to preferentially choose the official recommended rollback version.
3. Battery Assurance: During the operation, ensure that the phone has sufficient battery power (it is recommended to keep it above 50%). Avoid interrupting the flashing process due to low battery levels.
4. Disable the “Find My Phone” function: If the “Find My Phone” feature is enabled, you need to log in to your Xiaomi account before using it to turn it off. Otherwise, after the device is restored, it may trigger the activation lock.

By using the above methods, users of Redmi K90 can choose the appropriate system rollback solution according to their own needs. If there are any doubts about the operation steps, it is recommended to refer to the official Xiaomi documentation or contact customer service for technical support.

The post How to Restore the Initial Version of Redmi K90? appeared first on IGeeKphone China Phone, Tablet PC, VR, RC Drone News, Reviews.