Shelly Firmware update stuck with spinning dots

I tried to update 3 of my Shelly Devices today. One of them successfully updated (a Shelly 1). A second Shelly 1 and an I3 has been stuck in an update loop (according to the app) for about 4 hours now. I am afraid to cut power to them to try to bring them back online as this may brick them.

Any suggestions?

All three devices have connectivity to the router and a valid IP address. The i3 came back online after cycling the router. The second Shelly 1 is still spinning. I can connect directly to the working Shelly 1 and the i3, but not the spinning Shelly 1. Time for an electrical restart?