I have same issues with my e30bx, no crossair and so on, wifi e BT enabled but non usable.
I'll try re-calculating the CRC
I know it's been posted, but here's what I did to correct it.
Open the .cfg file to be edited
remove the # CRC01 XXXXXXX line and the CRLF so there is only the CRLF from the serial number line (Use notepad++ and turn on symbols to see the control characters)
Edit the file, save it and calculate the CRC
Add the CRC line and one CRLF
Save the file
Done
The way I confirmed this was my issue was to use a conf.cfg file from my backup off the camera, remove the CRC line and CRLF saving the CRC number, then running crc01.exe against the file to see if it matched the CRC. Bingo.