Boot Loader

The SPA504G uses the PSPBoot boot loader. This is an old bootloader with not much info out there but there is one piece of documentation floating arround and can be found here.

The bootloader can be found in the firmware update files: psbl.elf

Recovery Mode

There is also a recovery mode the device will boot into if it cannot load the bootloader. This is a minimal version of PSPBoot. This recovery mode can be manually entered into at device boot by pressing esc when prompted with Press ESC for monitor....

PSPBoot1.4 rev: 1.4.0.6
(c) Copyright 2002-2008 Texas Instruments, Inc. All Rights Reserved.


Press ESC for monitor... 1
(psbl) help
reboot            version           info              fa
printenv          setenv            setpermenv        unsetenv
defragenv         fmt               fmtkosmos         boot
dm                oclk              help              ls
df                cp                cat               rm
tftp              upgrade
(psbl)