Sideloaded and trwp original ROM now ota updates fails.

I played around with cm had but decides to go back to stock. I installed with twrp and then got a update notice. I downloaded and trwp tried to install but fail. Use toolkit to load original recovery and downloaded uodate, not it says updating and then says recovery fail. And when phone boots up it ask to downloaded update. Any help would be appreciated

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Trwp not working

Hi guys, i m new to this world but i learned from xda and somehow managed to root my S7 Edge, but the whole purpose of rooting my device was to install Walkman App and Xperia Keyboard in my S7 Edge.

Unfortunately even after rooting i could not use the full potentiel of TRWP Recovery as i could not Install Zips, could not backup or wipe data as it shows 'unable to mount storage' failed to mount data'

requesting you to help me if i may have skiped some important fact.

thank u all.

Device not found under adb...not able to install trwp..

Folks,

My laptop does not load adb drivers successfully...anyone help ?