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Old 11-01-2010, 08:32 AM   #1
rapidblue
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Reflash K3 from scratch?

Hi guys,

Just out of interest, I was wondering if it's possible to wipe a Kindle 3 clean and then flash it from a clean state??

Thanx guys
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Old 11-01-2010, 01:29 PM   #2
Acorn
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I'm pretty sure it's possible using the JTAG pins.
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Old 11-01-2010, 01:48 PM   #3
rapidblue
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Googled around a bit and it seems quite complicated. Guess I'm gonna lay off that for a bit. Thanx for the info though
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Old 11-01-2010, 01:51 PM   #4
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How clean we talking about here?

If you blow away the bootloader in flash then you'll be stuck if you don't have a JTAG adapter that supports 1.8V.

If you delete everything in flash then you'll lose the Kindle specific items like the Kindle ID and DRM keys and calibration data for your screen so if you don't have a backup then you're stuck again. You can't just copy it off another Kindle since the keys won't be corerct.

In theory you can recover from a bad firmware by putting the Kindle into recovery mode however we don't have any complete firmware images. The images that have been release so far have all been patches.

In short, it is possible but I wouldn't even consider it unless I had a full backup of the Kindle first and a 1.8V JTAG adapter along with software that supports the Freescale CPU and MoviNAND flash.
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Old 11-01-2010, 01:54 PM   #5
rapidblue
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Aah, makes sense. I see you also right about the actual full firmwares - the current 3.0.3 is also only a patch (at about 3MB)...
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Old 11-01-2010, 01:57 PM   #6
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Hmm.. I'm thinking it might be a good idea to make a full backup of the filesystem on my Kindle.. just in case.
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