[impac4000]

Are you talking about COMBOX retrofit? Or TCU or Mulf2 ? Which radio do you have ? Mask, ccc, cic?

 

[impac4000]

Yes you can update the cic software and most likely you will need it in order for the combox to work, its a simple process about 1.5hrs to update cic than coding in combox

 

[impac4000]

With cic update you will see a little difference screen colors will look little better, mostly its the internals

 

[impac4000]

Mostly more Language choices that you can code, and more choices to add new hardware/retrofit for example Combox, menu will look more up to date, you cant update it with regular obd cable you need an icom,