I think he was asking about reversing the boot order. This does not make sense due to various reasons:
- Once you booted the Apple firmware you need to reset the Ipod to go back to Rockbox. If you had Rockbox running previously you'll go to Rockbox, if the last OS used was Apples you'll get Apples.
- You _don't_ shutdown Rockbox by holding Menu + Select. This makes a hard reset, and Rockbox will loose all unsaved settings by this. To switch from Rockbox to Apple shutdown the Ipod (by holding Play, as the manual tells) and afterwards power it up again, flipping the hold switch to boot Apples Firmware.
- This is about Rockbox, and we want to use Rockbox. It doesn't make any sense (to the devs) to boot the OF first, plus, as I stated above, there is really no need as you need to explicitly do some steps to switch firmwares.
(sidenote: you _could_ change the boot order of the bootloader, but if you choose to do so you're on your own. It also requires rebuilding (i.e. compiling) the bootloader. Check the wiki if you want to dig into this.)