hamgray
Speaking in general, you can copy boot.bin into SD card renaming it to ldr.bin and it will be executed during the next boot process. When executed, ldr.bin runs commands from update.txt file. And some of these commands can rewrite flash regions.
ddabcd277, lolypop000
As I remember bootloader is able to load & execute ldr.bin, but I don't know the exact conditions of this. Usually ldr.bin execution is initiated by firmware. So this won't probably help in this case.