Quote:
Originally Posted by knc1
I am pretty sure USB downloader mode only writes to flash. ...
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Actually, it can write to RAM too. In fact, that is how it loads and runs the modified uboot images in my "Kindle Select Boot" thread (and which are also used in the kubrick ISO images). I modified those uboot images to boot to main, diags, and fastboot, respectively. And yes, they load from USB downloader mode and they run in kindle RAM. The uboot source cood could be used as a base to launch custom code after it initializes SDRAM and hardware. Beware that uboot inspects the IDME vars to decide how to initialize SDRAM because not all kindles use the same RAM.
Sadly I lost the source code for the uboot mods (and many other projects) when my hard drive AND my backup drive both died within hours of each other (turned out to be bad "spiky" power supply that killed a mobo, two video cards, multiple hard drives, and more).