so i've been using this tablet for almost a decade for studying, playing, etc... And then, i wanted to get it an update\a custom rom and a frimware update, but i didn't find a single one of them available for this device, currently it's on android 4.4.2, but i wanted to make it atleast to android 8.1, because it became so laggy. And i heard that custom roms make devices smooth.Can anybody find me a custom rom and a frimware update for my tablet?