Successfully obtained with following steps:
1. Open the back panel and get serial connections where printed "SERIAL DEBUG" Tx, Rx, GND (from L to R). I used "FTDI Basic Breakout - 3.3V" at hand with power supply from USB port
2. Get your password with Python script:
Code:
% python -c 'import hashlib,sys;print "fiona%s" % hashlib.md5("%s\n" % sys.argv[1]).hexdigest()[13:16]' YOUR_SERIAL_NUMBER
3. Reboot Kindle and stop autoboot, then enter into uboot mode
4. Run 'bootm 0xE41000' command
5. Tap 'Exit' and 'Reboot or Disable Diags', then 'Exit to login prompt' on the screen of Kindle
6. Login as 'root' with your password generated by Python script
7. Mount filesystem and edit password
Code:
# mount /dev/mmcblk0p1 /mnt/mmc
8. Reboot and enjoy!
bootlog -->
http://pastie.org/9622128
