How to restore fastboot in Kindle?

Question

Electronic books

Hello! The other day, after loading another book into my Kindle5, it froze, I had to do a hard reset.
After the reset, he recovered completely, but when he downloaded that ill-fated book, he again hung up.
The second hard reset did not help, and the book hung in the state of restoring:

Then, having found instructions for restoring on the Internet, I started doing it through the MfgTool program, but in the process it turned out that I had a broken diagnostics, after entering the diagnostic mode, it displays this screen:

I found how restore everything together, but when trying to enter fastboot mode, the reader is determined for a second and then actions 0.
I no longer know where to dig in this problem, if anyone can tell me please.

Answer 1

I'm afraid you need to disassemble and work through the UART port. Everything is possible there.