Hi Edwin,
I am aware of the problems with the DX firmware. The problem is, that the JetQi bootloader calls functions from the original firmware. To support DX we need to disassemble the DX firmware and find the adresses of the functions we need to call. I already started disassembling but did not get very far. If you have access to the pro version of IDA disassembler I can try to guide you to find the entry points.
Cheers,
Dopi