MMI 3gp stuck on jukebox

[Oski]

After conversing a 3gp from us to eu it won't run jukebox, keeps showing "loading medium or device, please wait", but nothing happens even after an hour or two. I can't choose any source as well as it keeps throwing the same message. Can this be sorted somehow?

[dusko]

navigation work?

[dusko]

try reset to factory settings and restart unit

[Oski]

Yes, I've tried that, but did not help. Is there any option in green menu to delete jukebox partition?