In the same boat bought a used ED that had the GDE tune already on it and want to save it. My plan is to buy a used ECM and use either a Kess V2 or KTag unit to clone my ECM and also dump the tune to a file for safe keeping. Emailed GDE today to see if I can just buy a bone stock ECM from them with stock FCA tune on it and they said nope. Not really fond of the support from GDE to be honest, but I do like the Hot tune. If people shelled out for the tune and GDE is now in hot water they should do something to make it right for the people who bought it.