Just tried, same problem

Just did that, IMEI is correctly shown, I already flashed different firmwares (first was A, I'm now on G) but I'm now stuck on the G firmware due to the conversion :/

Edited by Adrien835 at 2017-12-20 18:43
Also went into engineer mode, I kept seeing "Query Failed" error messages. I then did a factory reset because I knew it was gonna work until reboot, went back into engineer mode and everything was set correctly and I could manually set what I wanted, worked great. Until reboot and bam "Query Failed" and everything is weird again.
Thanks for your answer though. Today the vendor sent me the return address so I think that I'll send it back and get a refund that way if I find no solution.

This person is having the exact same problem as me: http://forum.flymeos.com/thread-37039-1-1.html