I used the downgrader KUAL extension to downgrade to FW 5.10.3.
https://s3.amazonaws.com/firmwaredow...ite_5.10.3.bin
It said the downgrade was successful, but now when the kindle starts, the screen is completely blank.
If I press the power button the screen saver comes up, and if I plug in the USB the USB screen comes up. I've tried rebooting (the long press power button menu also works), but the screen is still completely blank.
Any ideas on how to fix it? Really hoping I didn't just brick my kindle!