Hey boxsport, there's really three parts of the approach here; one is the unbricking, for which more info can be found here: LT1 UnBrick. The read/write flash routine I think is figured out but not...

I was getting my feet wet in the disassembly and then life got in the way. Not sure when I can get back to it but I'll update when I can.

Given the overall content so far, I suggest we get an admin to rename this thread and then I'll start another thread about the XDF. I've made progress on the XDF but life got in the way. Hopefully...

Howsabout this: Maybe the smart approach is to get Tom's socketless brick fixer working, then we can start playing with selective writes. I have accumulated a decent stack of PCMs here (of both OBD1...

I agree - no reason to change it if the data doesn't care and there's already a precedent.

No worries. Moderators, organize away.

Kur4o, I was just realizing that the BIN I was pattern-matching on was from Tunercat OBD2 (now JET DST). But is the organization of the file arbitary,...

I added that bit to my draft XDF, but what indexing are you using? 20B4 is 00 in both a '96 B-car BIN and a '97 F-body BIN, and both are in a field of 00s.

Is that in the E side or the T side?...

Well, I've got the disassembler open and am looking at the OBD1 code, with a whole lot of help from kur4o. And great work him on the commenting! I need to start an Ibuprofen fund; whew this is new...

I took a step back and realized there's still hundreds of parameters left. I started writing a script that takes in the '95 XDF, loads in all the scalars, tables and flags, then loads up the...

Well I got through another 40 parameters. I haven't dug into the disassemblies yet, just using BeyondCompare on the BIN files to do pattern matching between the files. There are definitely a few...

Wow that's very helpful. I've done what you suggested - started with an OBD1 BIN and then opened a OBD2 BIN, both in TunerPro, and just used the built-in XDF editor which allows me to immediately see...

I've thoroughly mined that thread for info but didn't want to hijack it. He's really focusing more on the hardware and comms side of it so I figured I'd work on the file definition.

I have started working on an OBD2 LT1 XDF for use in TunerPro. I know I'm not the first, and I'm looking for anyone interested in helping or contributing. I've made a lot of progress with the big...