Quote:
Originally Posted by JosephWebber
When I try to charge it (for up to six hours) I get a brief view of the bootloader followed by the pulsating rotating Android logo. Does this mean that it is charging? If not, what does it mean?
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It means your operating system isn't loading, for any number of reasons. You're running, I believe, Android 7.1 ('Nougat', LineageOS 14.x) on a rooted Nook and there could have been an update that failed (or succeeded, badly) from Google Play that corrupted something, it could be some software clash/bug that there's no way to know until you crash your system -- bottom line, if your Nook is stuck at the spinning Android screen it means you've got a good battery, your system is trying to boot so that's a good sign that your hardware is good.
You probably won't like the fix, but here it is: You'll need to build yourself a bootable microSD card, then use that card to 1)reset and clear the cache on the existing OS to see if it'll then boot so you can recover it, and/or 2) boot from the microSD card, reset/clear the OS, and reinstall the OS and gapps packages, basically start over from scratch.
A good guide for this is at
https://nookhdplusandroid7.wordpress.com/
Bottom line: You MUST use an external microSD card to boot your device to the point where you can either attempt recovery, or reformat/reimage.