Hi, @ksto2020
Greetings and welcome to the Roku Community.
Let's first perform a troubleshooting step to resolve this issue. Since you've tried to update your Roku TV, we recommend performing a system restart by navigating to Settings > System > Power > (skip if no sub-menu) > System Restart. Then, try to update once more if you're able to install the new update successfully.
Let us know how it goes.
All the best,
Kash
Takashi O.
Roku Community Moderator