Search found 26 matches

by beyerch
Sat Dec 17, 2011 7:22 am
Forum: GM LS1 512Kbyte and 1Mbyte and newer
Topic: Open source GM OBD2 flash tool using a ELM327 device
Replies: 382
Views: 339285

Re: Open source GM OBD2 flash tool using a ELM327 device

Yeah the planethax tool is over here https://pcmhacking.net/forums/viewtopic.php?f=4&t=401#p4515 It does brute force it, and the inbuilt timers in the pcm code slow it down significantly. On the plus side, it'll always get the key, whatever the algo is. But in this case the '0411 method seems t...
by beyerch
Sat Dec 17, 2011 7:13 am
Forum: GM LS1 512Kbyte and 1Mbyte and newer
Topic: Open source GM OBD2 flash tool using a ELM327 device
Replies: 382
Views: 339285

Re: Open source GM OBD2 flash tool using a ELM327 device

festy wrote:try this, I think it might be what you're after.

function SeedtoKey(string seed) returns string Key
eg:

Code: Select all

Dim X As KeyDLL
Private Sub Command1_Click()
  Set X = New KeyDLL
  Text2.Text = X.SeedtoKey(Text1.Text)
End Sub

But where do you supply the algorithm number?
by beyerch
Sat Dec 17, 2011 7:07 am
Forum: GM LS1 512Kbyte and 1Mbyte and newer
Topic: Open source GM OBD2 flash tool using a ELM327 device
Replies: 382
Views: 339285

Re: Open source GM OBD2 flash tool using a ELM327 device

The bootloader is already in the pcm. You need to unlock the pcm, upload your code to ram, set the bootloader to execute from ram next cycle, then reset the pcm, then talk to your own code on the pcm, and take it from there. For GM PCMs, the bootloader is most definitely *NOT* in the code. You uplo...
by beyerch
Fri Dec 16, 2011 9:10 am
Forum: GM LS1 512Kbyte and 1Mbyte and newer
Topic: Open source GM OBD2 flash tool using a ELM327 device
Replies: 382
Views: 339285

Re: Open source GM OBD2 flash tool using a ELM327 device

What exactly do you guys need to know about flash programming VPW for GM? I have made commercial software for this purpose in the past and while I've been out of the scene for 5 or 6 years, I'm pretty sure I can assist with this. I will be very straight forward though : #1 - I want to get back into ...
by beyerch
Sun May 23, 2010 4:14 am
Forum: Engineering and Reverse Engineering
Topic: '99 Saturn Dissassembly
Replies: 58
Views: 61284

Re: '99 Saturn Dissassembly

Very good info!