Originally Posted by Fmstrat
The jailbreak does not do anything to the passwords on the main partition. You can install the usbNetwork package, which will normally give you access using any password. The jailbreak will normally replace the /etc/shadow file on the diags
partition so that you can access it using the credentials (username/password) "root/mario".
But just to state it again: this jailbreak is for the Paperwhite only
. It is not related with any other previous jailbreaks, and what worked previously doesn't automatically work now.