Page 2 of 3
Re: VZ Immo Off
Posted: Tue Aug 13, 2024 10:04 am
by Tazzi
I have just tried messing around with the VZ V6 ecu with those bytes, and it still says immobilized, both with and without the PIM fitted.
Although, I do not have a VZ V6 here to actually plug it into and see if it fires up.
Re: VZ Immo Off
Posted: Fri Aug 16, 2024 10:01 pm
by delcowizzid
Send me a modded 929 os and some way to flash it in with tactrix cable I'll test it ASAP
Re: Why I hate VZ V6 ECUs...
Posted: Thu Mar 06, 2025 6:29 pm
by Knackersjewels
VX L67 Getrag wrote: ↑Mon Aug 12, 2024 5:49 pm
That can be done with fermec tool!
Fermec tool can't read full eeprom, only vin and IMMO, I use pcmflash
Re: VZ Immo Off
Posted: Fri Mar 07, 2025 1:28 pm
by keysersoze
Currently working on the MED9.6.1 IMMO for stand-alone use. The EEPROM method doesn't seem to work. But this single IMMO function is a years work alone to sort out...
Re: VZ Immo Off
Posted: Fri Mar 07, 2025 2:05 pm
by Gareth
Watching with great interest!!
Re: VZ Immo Off
Posted: Fri Mar 07, 2025 2:29 pm
by keysersoze
A US based E69 ME9-6 Funktionsrahmen would be so useful for understanding the labels and their values. The SAAB ME9-6 function sheet has only a few useful hints.
So far two US OS's have completely different IMMO functions as it is. So there's that as well...
Re: VZ Immo Off
Posted: Fri May 16, 2025 9:00 pm
by delcowizzid
I have a new cable on the way that "should" be able to read the whole ecu and clone an ecu so I'll be back into this when it arrives and I get an eeprom read
Re: VZ Immo Off
Posted: Thu May 22, 2025 3:18 pm
by antus
@keysersoze How did you go about disassembling the bin? Just load a bin in to Ghidra and pick MPC555 and let it run? Anything special to set up?
Re: VZ Immo Off
Posted: Fri May 23, 2025 9:37 am
by antus
update: Looks like its easy to run ghidra on ubuntu 24 LTS. Just apt install python3 openjdk-21-jre openjdk-21-jdk then from an unzipped version of ghidra run it with ./ghidraRun
Once its open create a project, import the bin file from the PCM and use processor type powerpc big endian 64 VLE/Alitivac 64/32 bit. That may be overkill for the processor type (im pretty sure it doesnt use the PPC VLE function and perhaps not 64 bit) but it seems to be covering everything and appears to have found all the functions.... much more than the out of the box ida experience when getting started with what to me is a new architecture.
Re: VZ Immo Off
Posted: Fri May 23, 2025 10:42 am
by Tazzi
antus wrote: ↑Fri May 23, 2025 9:37 am
update: Looks like its easy to run ghidra on ubuntu 24 LTS. Just apt install python3 openjdk-21-jre openjdk-21-jdk then from an unzipped version of ghidra run it with ./ghidraRun
Once its open create a project, import the bin file from the PCM and use processor type powerpc big endian 64 VLE/Alitivac 64/32 bit. That may be overkill for the processor type (im pretty sure it doesnt use the PPC VLE function and perhaps not 64 bit) but it seems to be covering everything and appears to have found all the functions.... much more than the out of the box ida experience when getting started with what to me is a new architecture.
Ghidra is great!
Allows also implementing scripts to auto perform various tasks to speed up a process.