I know this is an old tablet and mine works fine but there are so many apps i cannot run on it because it's so old.
For some reason when I go to recovery (power plus volume down) it only gives me options to install from cache or to install from SD card. My Tab doesn't have an SD card slot and I've tried many different things like putting the Google Apps file in an /sdcard folder but no luck. Maybe I need a better recovery that will allow me to install from OTA USB or from Internal storage, or directly from the PC.
I have never rooted a phone before or unlocked a bootloader, and maybe I'm missing a step, but no matter how many forum posts I check people seem to be able to run it from /sdcard which is simply not working for me.