[mtuneserwis]

Hello,
I have a problem with a BMW B05cн 0261 209 010 (ME9.2.1) ECU. I believe I damaged it mechanically while opening the case.
Current status:
lдциcн: No communication.
KESSv2: Identifies the ECU correctly and reads the Flash without issues. However, when trying to write, it displays the error "Wrong Security Code" and refuses to proceed.
Trasdata (BDM): Reads Flash and MPC correctly. However, the EEPROM file is empty (contains only FFFF).
Writing via Trasdata: Flash and MPC write successfully. When writing the EEPROM, the process reaches 25% ("Writing" status) and then freezes completely.
Repairs already attempted:
Reballed the MPC processor.
Replaced the 30460 Driver.
Replaced the EEPROM chip with a new one.
The behavior remains exactly the same.
Initially, I managed to get a full backup via Trasdata after removing the outer cover. The damage likely occurred when I slightly bent the PCB while trying to access the EEPROM.
What else should I check? Which specific component or circuit could be responsible for this behavior, especially the EEPROM write freeze and the security code error?

[sixcode]

same answer

get other ecu and clone it
also some tools say it did read the eeprom but does it not in that case de-solder and read in programmer

[mtuneserwis]

The ECU is expensive. If I can't fїж it, I'll buy a new one. I have a full backup from Trasdata. I tried saving the EPROM to VVDI, but nothing helped.