Hello, I have a u-connect with version 17.35.31 and I would like to go back to my version 17.07.46. Since 17.35.31 version it's impossible to downgrade. I always have the answer impossible to read the file. I am not alone to have this problem. Other people have the same answer. I have the same answer with my official USB key of my map upgrade. I have heard that with the latest version it's impossible to downgrade. The problem is that with this version an album plays in a loop. The concession has answered me that it is the new way of playing for jeep. Thank you for your help