Replacing BMW F20 FEM Unlocking original　fem and donor fem and changing VIN
rewriting FA
Programming FEM GW in progress
Security access error 830e
Please tell me how to solve this proble
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The last used FEM I did, they stated to upload the saved FA once refitted to the car, not on bench.
Then update the FEM GW & BODY on the car.

I also found before unlocking any FEM for secret code, it is best to update FEM GW & BODY before doing ANY other work, this is ok to update on bench.
Had a few issues in the past without updating first.
Hope that helps.

I'll get the car in and install it and try again. Thank you.

also please make sure your autohex software in latest version , so that there wont be this error.