2002 GMC Envoy IPC mcu bin dump

[Yovne]

Does anyone have a full bin dump for the IPC mcu on a 2002 GMC Envoy. Trailblazer should be the same, I believe.
This one went dark and silent after I used SPS and it seems there is a way to restore communication if you use Minimon and program memory sectors directly.
This IPC has the DIC with steering wheel controls, curb view etc. and Canadian km/h.

I almost got somewhere when I successfully connected Minimon to the mcu's TXd and RxD and could see some of the memory contents.
The only file I could find is for a GMT800. At first I sent values to 4000 to 3FFF and the cluster started up! I thought it had fixed the coms but SPS still would not establish communication.
Also, the DIC personalization menu only had language and units; all other options were missing.

So I loaded the GMT800 bin again in Minimon, intending to compare the data values, but I misunderstood the meaning of the Minimon buttons for upload vs Download and I think I sent the blanks in the window into the mcu instead of downloading the mcu contents into the window.
It had made sense to me that Upload means load my Minimon values up to the mcu, but I think Minimon thinks the term is 'download' the minimon up to the mcu. It's backwards to what I know.

So now it flickers the gear display and the steppers keep clicking and nothing else happens.

I thought if I can get the correct full bin-file dump of the same IPC mcu, I could program that completely and it would restore coms and operation.
Anyone?


( Aaagh. I forgot I had made a post conected with this in the PCM Hammer part of this site : viewtopic.php?p=140806#p140806)