So,

my X6 was acting very strange. Biggest issue was assignable knob 1 (which was assigned to control volume); after years of use - started not controlling volume anymore. The knob still worked - but even though it was set to do volume, all it would do is slightly alter the sound.

I couldn't figure out why, so I (thought) I backed up my sounds onto the computer and did a factory reset. Then I tried to put the backup back on the board (copied back the TMP and ROLAND folders) - but this did not bring any of my sounds back.

Did I backup the wrong thing? When I connect the keyboard to my computer the only folders that appear are the TMP and ROLAND ones, so I figured they contained all the info. Was that wrong?

Thanks in advance for your help.