Foxflash Failed to Write PSA MD1CS003 ECU Solution

By | October 31, 2023


Foxflash read PSA MD1CS003 ECU fine but failed to write. Any solution?
Foxflash Psa Md1cs003


Your battery is low. 12.1v on bench seems less to this ECU.

Better with 13.5V and 2-3A.

If still fails, fix checksum manually and write back.

If ECU is after 2020, it is not possible to remap that ECU (with OTP zone). You cannot read anything.