I have a Sansa e280v2 on which I had installed Rockbox using Rockbox Utility. I'm tired of it now and would like to return to the original Sansa so I tried using Rockbox Utility to uninstall it but it wouldn't. I tried going into recovery mode but my sansa wouldn't do anything, so I booted by turning on hold and holding |<< while plugging it into my computer, then I deleted the .rockbox folder and put PP5022.mi4 into the root directory (as I had read somewhere was a way to manually uninstall Rockbox without going into recovery). When I restart the player the Rockbox screen comes up on startup and then it says plug usb cable. Is there something else I should've deleted?
If it helps, this is what I see when I boot it using the hold/|<< mode: