Accidentally deleted system on Samsung tab e
i have a samsung tab e T560 and i upgraded my android from 4.4.4 to 7.0 and it worked, but some aps randomy were chrashing, so i decided to install android 4.4.4 back. (and i didnt use a tutorial) When reseting my tablet i accidentally checked system and it got deleted. Now my system file is 2 mb and i cant connect my tablet to pc with cable. I dont know how to reinstall system to the tablet, i can only do it with micro sd card. I have TWRP version 3.0.2-0.
basically if i try to reboot my system it says: No OS Installed!
Much help would be apreciated since i really need to fix this