Model : Hardware Version : Firmware Version : ISP : is it possible to upgrade firmware for AC5400 v2 using an ipad or the tether app? Or do I need a laptop? currently the router reset itself to...

Model : Hardware Version : Firmware Version : ISP : I was able to setup a VPN on my Archer c5400 while I was in Japan at my parents house. Now the VPN stopped working. I know the device itself is...