I have an F60 with original firmware 1.06JP and Rockbox does not run correctly on these models.
Installing RB and the bootloader as available here will result in the Gigabeat starrtup screen that hangs halfway and changes background color to yellow. I saw a mention in the (#gigabeat) IRC logs that upgrading to a newer FW version (3.0 was mentioned) helped to run successfully though I can not find the actual statement. I can however not upgrade the player (unless somebody can tell me how to do it from a *BSD/Linux) as I don't have access to a windows based PC.
Changing RB to read the FRAME address from LCDSADDR1 instead of the fixed value allows rockbox to start successfully and I can play music. However starting a plugin will still hang the player after displaying an 'Undefined instructions at 01DA6004'.
This leads me to think that some more addresses are different, but I have no clue as where to look further for this. Anybody clues available?