VERY IMPORTANT: It is VERY IMPORTANT to flash a brand new factory box with FULL flash. Only the FULL flash contains all components of the firmware. After this time, the APP ONLY can be used, which does not overwrite any user settings. Failure to do so may prevent the box from booting correctly. Please read the readme.txt file in the below downloads regarding upgrading channel files.
Also, please note that it is unsafe and may risk your box to downgrade to older firmware after upgrading to newer firmware. In short, do not go backwards to older firmware.