Quest 1 wiped and unusable after OS v38 autoupdate

Hello,

Yesterday I started up my Quest 1 to find that it had auto-updated to OS v38, and all the unit's internal save data had been erased. In addition, I'm not able to access the Store to install anything (I just get "Oops! Nothing to show here."), starting apps from the iOS App doesn't work, and manually installed APK's also don't run.

I've tried a Factory Reset, toggling Developer Mode, signing in and out, but it seems there's no way to downgrade back to v37 to get some functionality back. A colleague of mine also with a Quest 1 has confirmed exactly the same behaviour on her device - after the auto-upgrade to OS v38 all functionality is lost.

Has anyone else found a way to downgrade? Or any other solution? Or is the only option now to wait until OS v38 is patched for Quest 1?