I used to have (legitimately) an X290 eLearn on a USB stick which was also encrypted and I think somehow the encryption was tied to the USB hardware. I made a backup of it, just in case, but although an exact backup of the data it wouldn't open at all. Needless to say after a while the data stick became corrupted and although Fiat guaranteed a replacement if that should happen, by the time it had happened they had withdrawn the facility to obtain eLearn manuals on physical media so wouldn't replace it. Even restoring the backup to the USB stick after repairing the corruption wouldn't work.