Solved
ROKU TV (onn.) is stuck on a grey screen
Okay so i recently got a onn. Roku TV from my parents just plugged it in and i had to do a software update, did the update, then it said i had to connect to wifi to continue the software update (i wa...
Try a factory reset or recover mode if your TV supports it.
How to system restart or factory reset your Roku streaming device | Official Roku Support
How to use Recovery Mode on your Roku TV system | Official Roku Support
