006 error code

ahhhhh.  Hotspot only.  Try disabling all the other network connections from your other phones etc. Normally connecting with the hotspot is the default go-to since most other problems are with router misconfigurations (which you don't have).

See if you can force your hotspot to connect at 2.4gz only for the setup.  Will be slower but may provide a more reliable transfer of the update.  As long as you are sure the network creds you are entering are exactly what the RokuTV has stored, then I think you have hit a snag that may require the USB update to proceed.

May try this as an alternative route to update the software (no guarantee, just bypasses UGI menus of Roku)

From the Roku Home Screen after connected to your Hotspot,

Using your Remote, Press Home at least 5 times, then FF 3 times, then Rewind 2 times

Select Cycle Software Update Server (just refreshes the Server), then Select Update Software

Just as before, it should look for Update, Select Update Now when given the choice.

The TV should begin update and restart if successful.   

Hi mklb492,

Welcome to the Roku Community!

Thanks for letting us know about the 006 error you've been experiencing on your Roku streaming device and the steps you took to resolve it. 

This error code usually indicates that the update failed because of verification failure. May we know who your ISP is? (Internet service provider)

For troubleshooting steps, visit our Support page here. What should I do if my Roku device is unable to update software?

Please keep us posted, and we'll continue assisting you from there.

All the best,
Chel