The rockbox bootloader always boots into Rockbox by default - but if you put the hold switch to "on" immediately after you power on, it should boot into the Apple firmware.
Hi,
If you put the HOLD switch to ON while booting, Rockbox boots with "all cleared" (reset all settings).
To boot Apple's firmware you need to press and hold MENU while booting. A message will appears on screen: "Loading original firmware".
Bye.
[EDIT] This information I wrote above is wrong, only works on the old bootloader. The new one was modified. Sorry.
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