Download latest Android 6.0.1 stock firmware PC flash version for Minix Neo U9-H TV Box from here, here or here. Download latest Android 6.0.1 stock firmware SD card flash version for Minix Neo U9-H TV Box 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.
Archive: U9H_FW003 PC Flash / U9H_FW003 SD card update
Model: Minix Neo U9-H TV Box
Image file size: 596 MB / 654 MB
Platform: Amlogic S912
Image name: U9H_FW003_20170216.img / U9H_FW003 SD card update.zip
Build number: Android/q200/q200:6.0.1/MHC19J/20170216:user/release-keys
Inside archive: firmware + USB_Burning_Tool_v220.127.116.11.rar
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.