Was it that you do not know how to fix cellular connection problem? I remembered so and did not sent some devices which have working usb but no cellular. And there are some which are locked and I have never tried to decrypt the lock code. After usb fix they can be flashed but that wont change the code. Hopefully someone in Finland or some other country can can help with that. If there is a volunteer you could then send the locked boards straight to him and after decryption he could send them to me.