I want to change the tts language to spanish but the update_usertts didn't work so I installed the usbNetwork and it worked, but when I accessed to console via PUTTY, I needed the password of root so I searched and I found this
https://grenville.wordpress.com/2011...root-password/
But I cannot install the drivers for linux so I searched again and I found how to get root password for many kindles just input your serial
https://www.sven.de/kindle/
my root password is fiona91w