I've exchanged a couple messages with an ex-GM guy on Linked In, and I'm waiting to hear back from the last one I sent. He's worked on ABS calibration in the past, but I have no idea whether he'll be able to help with flashing. We'll see.jlvaldez wrote:I haven't made it beyond pulling it out of the housing yet, either. Looks like it "just" needs to be desoldered. I had some stuff happen as all this covid crap happened that required my effort elsewhere. So I had to shelf it. I'm trying frantically to get back on track now.
However, I was at a track here, talking to a guy that knows a few people in GM. I told him about how we're unable to get at the OS and need someone to reach out to. He is actually very interested in being able to remove or defeat ice mode. Turns out that he has 2 contacts he knows at GM. One was involved with the C4 electronics and knows all the people that worked on the C5 stuff.
So I had him reach out and start that dialog. I'll follow up with him soon, but want some confirmation. We need the OS binary. I'm surprised they're separate but that's the missing piece.
I was also told he may be able to get his hands on a C5R unit that could be given. However, I don't know if that would help, since I don't know if the C5R ABS unit is the same. If it truly just is a calibration tweak, then why can't we pull the calibration for a C5R and upload it to C5 (of course the means to upload is not yet determined).
I haven't forgotten, it's just been crazy the last few months but things are mostly back to normal.
I wasn't able to even get the lid off of the ABS unit. The electrical half and the valve/motor half came apart easily but the top plate with the connector on it is 100% glued to the case and I can't even get a knife in between the two. My next plan is to attack it with a chisel.