It is a Mercedes Sprinter edc17cp46. Foxflash tool read ecu ok, but cannot write. Error “non-eraseable sector in bench mode” possible from checksum correction?   Solution: Bad file. Somebody change values in OTP areas. Change your file supplier.

Problem: Foxflash read PSA MD1CS003 ECU fine but failed to write. Any solution? Solution: 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… Read More »

Problem: Foxflash read Renault MD1CS006 ecu ok, but failed to write ecu. Error “Modification is not allowed in virtual OTP Zone”. Any solution? Solution: You have modified your file in otp area. The edited file is bad. Change your file supplier, send original file, modify file and rewrite.   www.iecutool.com

Problem: I cannot read Audi A1 1.4tfs MED 17.5.5 with foxflash tool on bench and obd?? I can only identify and write. Failed to read also a seat ibiza 1.4tfsi med 17.5.5 impossible obd boots bench. Possible solutions: If read it via OBD,  try to go up to 14 volts normally it should pass. If… Read More »

How to understand the logic ECU manufacturers use? Bosch ECU references October 27, 2023 If you are new to the field of engine reprogramming, you have surely quickly had to familiarize yourself with the specific terms of this industry. To assess the feasibility and complexity of modifying an engine, it is essential to refer to the… Read More »

Some users reported that foxflash failed to read Mercedes/Chrysler Siemens EGS52 or EGS53 TCU. They can see it in the menu, but unable to read?   Foxflash will read/write EGS52/EGS53 in boot mode if ECU is not encrypted. If you fail to read EGS52/EGS53 in boot mode, make sure you don’t connect the bench box… Read More »