New RAX80 Firmware = Brick

Before taking the deep dive, which may well necessary, did you reset the router to factory settings after the firmware flash?

New firmware sometimes introduces changes that are not compatible with the old configuration.

So while it isn't guaranteed to fix problems a factory reset is the first thing to try if you have issues with new firmware.

This is a nuisance because you then have to reconfigure the device all over again.

You can backup your settings before you reset and restore them later. But that may just bring back the fault. Then again, at least you will know if the reset fixed the problem.

There is also a more drastic, "recovery reset":

• Press reset for 30 seconds
• Keep pressing reset while removing power
• Keep pressing reset for another 30 seconds while apply power

The factory reset is more a "witchcraft" move than a technically informed solution, but it does seem to fix problems, especially on the wifi front.

Before any of these, you could try an even more painless move, restart the network.

Be sure to restart your network in this sequence:

• Turn off and unplug modem (if there is one).
• Turn off router and computers.
• Plug in and turn on modem. Wait 2 minutes for it to connect.
• Turn on the router and wait 2 minutes for it connect.
• Turn on computers and rest of network.

If none of this simple stuff helps, work through the other suggestions.