the reboots are only with root. I tried many root methods, always reboots.
Something makes trouble in our devices if its rooted.
I rooted my 8.4 with towel root. It always rebooted (or maybe just reset) every time I turned it off when certain applications were running (Amazon Kindle, MX Player, and some others). For some reason all I had to do was reinstall the apps and I no longer had any rebooting problems.
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