Quote:
Originally Posted by SKK
Any way that doesn't involve Taking the kindle apart.
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There is no known way besides connecting to the serial port inside, at this time. Amazon calls what you want to do a "downgrade attack", and they have added code to the firmware to prevent that via non-invasive mechanisms. It would take discovering a vulnerability (i.e. software "mistake") to exploit, before we can downgrade firmware without a serial port connection. Not impossible, but not easy either.
When I jailbroke my PW1 immediately after I got it (being one of the first people to get one),
NiLuJe called it "not a 0-day, more like a -150 day". That was clearly a mistake from lab126, because it exploited a simple "tarbomb" vulnerability they had already fixed in the K5 firmware multiple versions earlier.
Though lately, they have been getting really secure, which makes it look like they might have an aspie programmer (i.e. technology addict) on their staff at lab126.