Bluesound Node Issues After the Firmware Upgrade

"I have a node 1 that froze up a couple of weeks ago..."

rocray, if by "freezing up" you mean its stuck in a red LED mode, try reading through the link below, particularly the last few posts and see if that helps. It helped me with my Node N100.
Good luck.
https://support1.bluesound.com/hc/en-us/community/posts/360049475773-Node-N100-stuck-in-red-light-

I tried downloading the newest release 3.10.3 using the ethernet connection (vs. WiFi) and it revived my N100. There’s a lengthy discussion on the Bluesound Help Center forum about this subject and one of their support guys walked me through the process and it was very helpful. My Node2 worked fine after the upgrade without any additional intervention. BTW, this recent (3.10.0) upgrade was the only time I had issues with my devices. All in all the units have been rock solid over the several years I've owned them.

One little trick for the rest to work is you have to hold your finger on the button before you plug it in the outlet, and keep holding it until it starts flashing red. It should then turn blue if connected to ethernet or turn solid green if on the WiFi. Then just follow the set up process for WiFi...