Running 384.7 on my RT-AC3100, the 2.4 GHz radio is reporting a temperature of 800896076 °C. The 5 GHz and CPU temperatures are reasonable.
My apologies if this is a thread Hijack but very similar event wtih new RT-AC86u, see
thread. Hope your situation is less dire<G>. Perhaps you should respond there, as this is more likely HW vs FW related?
Over a day, temp showed same number as yours, 2.4G panel light went out, the Web GUI lost most of the Wireless pages. Shortly thereafter, could not access the Web GUI at all. Factory reset and flashed back to latest ASUS FW, but 2.4G Radio light was dead. Replaced router, flashed to 384.7 and am doing burn in and test now, but GUI, light and temps correct.
Did you do check sums on the FW, maybe it was corrupted? If your 2.4G radio is lit, then maybe your HW is ok still. Try reflash, factory reset and put in settings manually. I exported the manual host list to a text file to be able to cut and past MAC, IPs and HostNames as well as port forwarding. Saved screens shots of other settings. I plug into the new router with it disconnected from the main network, and antennas detached so it won't interfere with with the current setup. Then look at pages to make sure they match using second client. I had several hours of misery by connecting the router before entering my manual DNS entries where some manually assigned clients grabbed the wrong IPs at router boot. For the swap: Power off your ISP modem before connecting, then modem on-> wait -> router on. Maybe even reboot router again. Might want to reboot any windows clients. and run
too. linux clients can be renewed with
ifconfig
Also have RT-AC3100 but still on 384.6, but doubt FW had anything to do with this. You can run the AC3100 at a lower power level using the Professional Tab of the Wireless section ("Good" or lower vs "Performance"). I may keep the AC3100 as primary for this reason, and the AC86u as the spare since I recently learned the AC86u doesn't have Tx Power tuning in my region, pity. We can't be without internet, so a configured spare router is always ready. cheers