SamyGO

Will (should) this reset procedure work to get the SamyGo widget back working on firmware 1118.0 (T-FXPDEUC_1118.0) on a UE46F8090??

Did you actually lose any apps when you upgraded to the new firmware? Normally they stay in place during an upgrade so you only need root access if you want to add, replace or update them, or of course if you've performed a factory re-set and lost all your settings.