p1et
26th April, 2025, 01:59 PM
Hi,
Normally I don't bother to take jobs like this but friend of a friend asked me to try after multiple people tried to do it and failed so I took my eye on it...
Original BSI was damaged by some short circuit made by human in car electric instalation. They ordered NEW Virgin BSI and somebody tried something, I dont know what exactly but with no results. Car still starts on old BSI but no lights.
First of all, I wanted to desolder and transfer original 95640 eeprom + that big MCU but I didnt know MCU is located between 2 boards and I would rather not try to separate them - I tried but not sure how to do this correctly. So for now I read both eeproms and they are different, so anyone who worked with this didnt copy just eeproms like I thought / or maybe copied but after it didnt work, programmed back with original virgin dump, I have no idea.
My question is: Is that possible to make it work without reading and rewriting big MCU or without desoldering and transferring it? Is it possible to modify eeprom somehow to work correctly with different SW new BSI?
I attach eeprom reading aswell pictures of BSI part number labels:
Normally I don't bother to take jobs like this but friend of a friend asked me to try after multiple people tried to do it and failed so I took my eye on it...
Original BSI was damaged by some short circuit made by human in car electric instalation. They ordered NEW Virgin BSI and somebody tried something, I dont know what exactly but with no results. Car still starts on old BSI but no lights.
First of all, I wanted to desolder and transfer original 95640 eeprom + that big MCU but I didnt know MCU is located between 2 boards and I would rather not try to separate them - I tried but not sure how to do this correctly. So for now I read both eeproms and they are different, so anyone who worked with this didnt copy just eeproms like I thought / or maybe copied but after it didnt work, programmed back with original virgin dump, I have no idea.
My question is: Is that possible to make it work without reading and rewriting big MCU or without desoldering and transferring it? Is it possible to modify eeprom somehow to work correctly with different SW new BSI?
I attach eeprom reading aswell pictures of BSI part number labels: