Hello gents looking to see if anyone has ever changed their factory OS to one that doesn't match the vin. Long story short looking to change my OS from a 2017 escalade to the OS of a 2019 escalade

Which module OS, what’s new in the newer OS? 

ECM OS 12691210

TCM OS 24286913

 

Difference is the new OS runs the 10 speed transmission which i installed

 

NEW OS Needed

 

ECM 12694524

TCM 24292121

OK cool. That’s way past my knowledge. Hopefully someone who knows will respond. 

Figured it out, you can use the hp tuners app and write the os directly to your vehicle

I actually run in my ECM Holden software to allow me Remote start function.

 

and if you are replace gearbox with different from factory need to get VCI or use donor VIN to update firmware

2017 8speed T87, 2019 10Speed T87A(locked) unlocked by HPTuner First,, or you by an already unlocked TCM from HPTuner