Temporarily removing storage drive on android TV to update the TV and keeping Channels intact

My TV, Sony 900 F, is ready for an update but I cannot update it because I have the USB drive attached for the Channels storage. A few weeks ago I accidentally removed the USB drive and it caused all kinds of issues for me. What can I do this time to make sure I don’t have any issues?

Does your dvr server run on the tv or your laptop?

It runs on the TV.

I'm not sure. You could try shutting down the dvr then detach USB?