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Old 07-24-2009, 01:02 AM   #75
ebs
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Posts: 100
Karma: 629
Join Date: Jun 2009
Location: California, USA
Device: Kindle DX
Quote:
Originally Posted by berend View Post
I have a few more technical questions too.
- For starters: there is no official firmware update for the Kindle DX yet. Is an image of the unhacked firmware 2.1.337560062 available for reverting if I would run into trouble with any other firmware that I use?
You can always extract firmware contents after installing my usbnetwork update. It's safe - I don't modify any existing code or scripts.

Quote:
Originally Posted by berend View Post
-What about using the usb networking firmware on an already registered Kindle DX like mine. Do I run the risk of losing the registration?
No, my Kindle is registered. I use usb networking only for hacking, not as a replacement for wispernet - it's safe

Quote:
Originally Posted by berend View Post
- I don't really know this, but I am assuming that books I buy through the Kindle store are DRM-protected and will only open on my Kindle. Is that the case? If yes, how does the device check the digital rights? Is that locked to a hardware ID (similar to a mac address) or is there a piece of software like a license file that should remain unaltered?
Google for kindlepid.py - there is plenty of info. In short, book is encrypted by Amazon using a key (PID) which is derived from Kindle serial number
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