Flashing Different OS's

1. P01: 09354896 can be flashed to a later 01+ P01 tune fine (12200411). But flashing a 0411 to a 09354896 will cause it to be corrupted.

2. P59: No issues flashing between any year of the blue/green connector PCM's

3. E38:

1a. 2006-2007 E38 (service numbers 12597121 & 19210738)

2b. 2008 E38 (service numbers 19418222 & 12612384)

3c. 2009 E38 (service numbers 19418223 & 12625455)

** Early 2009 G8 GT with the 6.0L uses a 2008 (12612384) Late 2009 uses the (12625455)

4d. 2010+ E38 (service numbers 19418221 & 12633238)

** 2010 2500HD trucks with the LY6 still used a 2009 (12625455) E38 ECM
***If you're locked out of an E38 following an attempt to reflash a different year's OS—for instance, flashing a 2010 OS onto a 2007 E38—common keys to try are 3F80, 43D4, or simply mirroring the seed. These solutions may save you from resorting to a time-consuming brute force attack or an ECM replacement.***

4. P12: 2005 2006

5. P12a: 2007

6. P04: No issues flashing between any year