Originally Posted by murz_07
I have different problem now.
My Kindle does not charge.
After about 30 minutes LED turns off and when I try to boot in diags it says "critical battery".
I charge using wall charger and PC.
After you get enough charge with a wall charger to use MfgTool, switch to fastboot mode.
Try charging in fastboot mode. When my K4 (and my touch) were in fastboot mode and connected to a USB port, the serial port showed a steady voltage increase until it reached its maximum voltage.
This takes a number of hours from a low-voltage battery condition.