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Opel Frontera 3.2 V6 Delphi ECU Checksum
Posted: Sun Sep 22, 2024 10:33 pm
by Metaller27
next game has started, Frontera Delphi ECU, 29F200 convert to USA software, here I also have a problem with the checksum, WinOLS 267 only finds the Trooper software, here the 800F is changed, I can't check whether that fits. Other software versions are not found.
Re: Opel Frontera 3.2 V6 Delphi ECU Checksum
Posted: Mon Sep 23, 2024 7:16 am
by kur4o
First you need to byteswap those files, looks like they are read with eeprom programmer.
There is similar holden pcm we have already some support for it. I think it can be read with some script, as long as you have access to a tool that support VPW protocol in x4 mode.
Writing will be not that far away once we dial checksums and find some volunteer to test it.
CPU is similar to 0411 ls1 pcm, DTC layout should be much similar too. Some disassembly will help find checksum range and where it is stored.
4000-8000 is eeprom area, 8000-20000 is calibration, 0-4000 is boot block, rest is code most of the time.
Re: Opel Frontera 3.2 V6 Delphi ECU Checksum
Posted: Mon Sep 23, 2024 8:48 pm
by Metaller27
yes is read by eeprom, hi-low swap i know, but how to checksum? winols switch 800F 8bit test with am29f800bb_xxS, and found only with this file a checksum
Re: Opel Frontera 3.2 V6 Delphi ECU Checksum
Posted: Sat Oct 12, 2024 6:28 am
by kur4o
Partial success, after some indepth disassembly.
CAL checksum is at 800e
16 bits word sum 2`s complement
Range is tricky, It starts at 8000 and end is where FF`s starts before 1ffff[end of data in calibration], checksum address is skipped.
There is also another range for OS part but for now no match or checksum address found.