I factory reset my tablet yesterday at 3:30. So far everything is good. But if I run a virus check (avast antivirus), it still shows the malware is still in the update folder. So it looks like it is still there, but not having any effect on the normal running of the tablet. Strange! It is worrying that it is still there though.
I factory reset mine yesterday about the same time and it's been running fine. AVG is still showing malware in system updates but the viruses haven't reappeared and there are no rogue pages opening in chrome
I factory reset again this afternoon after reading the latest comments. I left WiFi off, made sure to disable automatic system updates before turning WiFi on. Have scanned with Malwarebytes and it has picked up the malware still in the system update, the factory version.
(Had to edit my last reply as it hadn't picked it up, but 5 minutes later it did... -_-)
I'm hoping it will at least stop the pop ups... but only time will tell. All this faff, just want to watch my Tablet in peace!