If you use this site http://routerlogin.net/adv_index.htm you should be able to go into Administrator then into Backup settings that way you'll have a backup to restore once they release a patch. i was unfortunate to not realise this before i did the factory reset so i can't confirm it works as exactly as intended but its worth a shot.
Do you have a possible ETA on patch(eg hours, days, weeks)? However, if you are unable to provide it i understand this could take time.
Normally i wouldn't ask but i kind of need the Hybrid VPN functionality for some of my devices. Thanks