In XG SFOS 19.5+ is there a way to revert to the previous version of RED or AP firmware after applying updates manually from the Pattern updates page? Does each SFOS version have minimum RED & AP firmware version requirements?

Hi, i upgraded XGS 2100 and XG125 to 19.5 GA. I had some minor issues with VPN S2S and IKEv1. Most feature where fine for a week now. Today at the XG125 WiFi stopped working. Clients get a IP Adress and thats it, no Internet access or other access…