No worries, I also have a lot to do. I took more, clearer, pictures and fully disassembled the X3 2nd Gen (i.e. I removed the metal plate).
I will soon start digging into the firmware and ""TRM"" of the SoC.
I gladly accept your offer, I will come on IRC so we can talk: I would like to make a list of things to do for porting this device.