Rightn now X-Player with AMLogic S912 as CPU firmware has been released. BTW, you can now buy X-Player from Geekbuying.com for only $59.99 with free shipping world wide.
Download Android Marshmallow 6.0 firmware for X-Player from here, here or here.
Download Amlogic USB Burning Tool v2.0.8 from here or download Amlogic Burn_Card_Maker v2.0.2 from here.
Firmware details
Archive name: XPLAYER-8830-ETH-led-V33
Image: XPLAYER-8830-ETH-led-V33.img
Model: X-Player 2GB RAM + 16GB ROM TV Box
Archive file size: 558 MB
Platform: AMLogic S912
Inside archive: firmware + aml_sdc_burn.ini + u-boot.bin.sd.bin
Caution: Please update your tv box with much experience, if your tv box faces the problem like bricking, you can have a try with much experience. The firmware update process is done entirely at your own risk. Before updating, don’t forget to back up your data first.