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Here share the guides and tips to repair BMW FRM3 by Microtronik HexTag programmer when error appears on EEPROM.

Video: https://www.youtube.com/watch?v=VnW0GdlhF30

Procedure:

Go to Hexprog Software main menu

This is Microtronik HexProg version 1.06, the latest version is V1.0.8

Select “On Bench Programmer”-> “BMW”-> “FRM”-> “FRM3 E Series”

Click on “Wiring”

Solder wires to FRM based on the wiring diagram using BDM cable below

Click on “EEE”->“Read”

Error on reading EEPROM shows the files in FRM3 is corrupted

Click on “P-FLASH” and then click on “Read”

Reading P-FLASH…

To check the communication with FRM you can try reading the P-FLASH

Note: Stop reading once we know it’s communicating

Click on “EEE” -> “Read” again

Click on “Repair”

A FRM Repair message appears on the Microtronik Hexprog screen

“This function is used to repair corrupted FRM EEPROM data. It will try to recover the original data from D-Flash, if it failed please contact Microtronik for help”

Click on “Repair” of the prompt to fix the corrupted files

Note: in this step, Hextag read D-Flash and convert it to EEPROM on the background

FRM EEPROM data has been repaired!

When it shows the FRM Repair prompt again, just close it

Now we can read EEE shows FRM is back to normal state

Please code FRM using Autothex after repair

Done!