Quote:
Originally Posted by davidfor
Glad it works. But, you couldn't get me back to 2.6 if you paid me*. I might go to 3.19, but not anything older.
* Though, as I tell people at work, I can be bribed. Unfortunately, they seem to think a cup of coffee is enough. I suppose they know me to well.
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at the end I discovered this method and do it with my original firmware to keep the account and the serial number
Performing a manual factory reset
If a basic reset and a factory reset don't work, you can try a manual factory reset to restore your eReader to its original settings. After a manual factory reset, you'll need to set up and sync your eReader again. Before you perform a manual factory reset, charge your eReader for at least four hours.
If possible, turn off your eReader.
Note: If your eReader doesn't turn off, try holding the power button to the right until you see Powered off on your screen.
Press and hold the light button.
While holding the light button, slide the power button to the right several times to turn on your eReader.
Continue holding the light button and wait until the power light blinks rapidly.
Let go of the light button.
You'll see a Restoring message on the screen.