Apparently there's another bootloader that loads the original firmware by default that works fine. I didn't get a chance to try uploading it.
Is this a general problem with Rhapsody version of the player? If you follow the official guide you will end up with a device that boots Rockbox and will not boot the original firmware anymore.
Has anybody been able to come up with a fully functional player JUST by following the official guidelines?
PS: I tried the reversible BL and it didn't work for me...player was just stuck with the Sansa screen and it didn't boot any of the firmwares