My Kindle PW stops working several days ago. The device was jailbroken long before. Nothing particular is done recently and I'm using the native reader on that day. I pressed power button to start reading, but the device did not respond immediately. I tried several times before giving up. Minutes later it suddenly shows the content of the book that I last read. It does not respond to anything since then, however, including long pressing the power button.
I first thought it was due to low battery. So I charged it overnight. No luck. Then I took apart the device and gave the battery an full charge. Now it could be recognized on Windows as a USB HID device. I checked several forum posts. It seems that my device is in USB download mode.
I tried with the
"simple debricking methods". I used Mfgtool from a Windows 7 guest VM (Mfgtool does not work on my 64bit PC as it always crashes on selecting USB ports). Mfgtool reports success on switching to fastboot, but when I use the fastboot tool, it stuck on "waiting for device". The driver generated by inf-wizard is already installed.
Any clue for this? or maybe it's an hardware issue? The device is already out of warranty. Thanks in advance.