P1P - 01.05.01 - Bambu Studio wont connect

This will teach me to touch things. I hadn't used the printer for a month or two, started using it again yesterday and installed the latest version of Bambu Studio. This was all good, getting prints etc.

Decided to upgrade to the latest firmware (01.05.01) to see if 'quieter' printing really worked. Now, Bambu Studio (1.8.3) will NOT connect to the thing. Its online, it has an IP. I have Factory Reset it, rebound it via the app, still nothing. I have tried LAN Only mode (and logged out of Bambu Studio), it also still fails (SSL Connection Timeout). I have rebooted the printer several times, no change.

I have tried Bambu Studio on multiple machines and followed the 'it wont connect' troubleshooting. There is no wifi issue, all works fine. It is JUST the printer + Bambu Studio since I upgraded to 01.05.01.

The Handy app looks like it connects, as I tried a small print from there and it seemed to go through, but that doesn't help me much when I cannot print my things via it.

Is anyone else having a similar issue?

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