MobileRead Forums - View Single Post - [Progress] Jailbreaking Kindle 4.0 (Touch/No Keyboard)

geekmaster · 11-24-2011, 11:35 AM

I sent (some of) this to the IRC channel:

Although usually reserved for emergencies, many devices can get firmware replacements by the "pin-shorting" method. Connect a boot-rom (carefully chosen) address pin to ground [at just the right time during the boot phase], to make the firmware run but fail CRC check, then device tries to load new firmware from a TFTP server (or serial port).

Although there is a risk of damaging the kindle (especially if you slip and short the wrong pins), I have successfully used this method to "unbrick" multiple WRT54G devices for myself and friends.

This may be useful for development and testing, but is not suitable as a general method for "consumer" firmware upgrades.

11-24-2011, 11:35 AM	#121
geekmaster Carpe diem, c'est la vie. Posts: 6,433 Karma: 10773668 Join Date: Nov 2011 Location: Multiverse 6627A Device: K1 to PW3	I sent (some of) this to the IRC channel: Although usually reserved for emergencies, many devices can get firmware replacements by the "pin-shorting" method. Connect a boot-rom (carefully chosen) address pin to ground [at just the right time during the boot phase], to make the firmware run but fail CRC check, then device tries to load new firmware from a TFTP server (or serial port). Although there is a risk of damaging the kindle (especially if you slip and short the wrong pins), I have successfully used this method to "unbrick" multiple WRT54G devices for myself and friends. This may be useful for development and testing, but is not suitable as a general method for "consumer" firmware upgrades. Last edited by geekmaster; 11-24-2011 at 11:37 AM.