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!
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