Factory reset disaster

[AC Question]

I did factory reset on my galaxy tab s as had never ending problems with battery life after marshmallow update. Now everything looks different...can't update the os - says it is 6.0.01 but looks nothing like before. Now my bluetooth headphones can't connect as they don't show up when scanning for nearby devices. I wish I had never done the original update! First the battery draining in 2-3 hours and I even changed to a new battery thinking it might be the battery and not android update at fault even though it all went wrong following the update. I posted here for advice then but got no replies...so eventually after new battery not improving things I went for the reset and this was clearly a huge mistake. How can I get back to where I was before marshmallow? How can I get my headphones to work again? Please help....very stressed about this all!!

 

[B. Diddy]

Welcome to Android Central! If you're asking how to revert back to the previous Android version, you'd have to try flashing it using Odin: http://forums.androidcentral.com/am...w-flash-stock-rom-via-odin-new-interface.html

How did you update the tablet in the first place? Was it an over-the-air update, or did you use Smart Switch to install it?