Kindle Oasis 8th gen reboots whenever put to sleep

[killerfish72]

I have an 8th Gen Oasis which I adore. Recently, for some reason, when reading a book and I decide to either press power button or close the cover to sleep the device, it reboots and loses progress in my book. I've tried hard resets, factory resets, all the tricks I'm at least aware of.

Desperately, I decided to jailbreak to see what would happen. Oddly, when I launch and read/sleep device while in KOreader, this behavior significantly improved for about 5 or 6 sleep/wake cycles between reading. But it did come back. I've tried re-installing latest firmware and same issue persists.

Any ideas? Or is there a way to truly format and re-install Kindle OS similar to Windows?

Maybe it's time to finally put down my 2016 Oasis. I just love the device. It's so lite, small, and has buttons. It was perfect. ...bummed...