Here is my solution for a downgrade to 5.4.3.2
Go to
http://www.xodustech.com/guides/kind...te-demo-unlock
and follow the instructions .
The Kindle will boot with an error message .
Repeat the procedure , now copy the firmware version 5.4.3.2.bin on the Kindle .
Press the Power button for five to ten seconds. The Kindle will boot . Perhaps you have even press the Return key .
I bought the Kindle with firmware 5.6 . Now I have 5.4.3.2