Can you flash / update infotainment system

[Bigbear]

I have a 2011 yukon hybrid and was wondering if the stereo/ nav unit can be upgraded to the 2012/2013 software version. Can you flash to the new firmware or do you have to replace the whole head unit?

 

[Bigbear]

I have a 2011 yukon hybrid and was wondering if the stereo/ nav unit can be upgraded to the 2012/2013 software version. Can you flash to the new firmware or do you have to replace the whole head unit?

 

[jetmech]

Completely different hardware package, need the entire new unit