Posted: Sat Apr 10, 2021 3:33 Post subject: R8500 caldata missing radio
I did a bit of flashing, running some commands and currently missing one of the radios.
Does anyone have caldata for this router to restore or anything else to bring it back to normal to start over?
I've been using NMRPflash to Netgear 22.214.171.124 (Initial Release) firmware but it goes into a boot loop.
I've flashed the CFE, and can continuously restore back to DD-wrt firmware with NMRPflash which is great, but still with broken wifi radios.
Firmware: DD-WRT v3.0-r46316 std (04/09/21)
It's possible that the radio stopped working this week prior to installing DD-WRT, so I would like to return to latest Netgear firmware to verify.
I used the same process outlined in that thread, flashing version r30260.
A funny thing happened, I turned the router on today after being off for 7 days and all radios are working.
DD-WRT r46316 is working very slow with high very CPU 0.90 avg usage with only my laptop connected over LAN. I have that same version on my active R7000 router and it's at 0.02 avg.
Flashed v3.0-r46380 (04/17/21) and one radio disappeared again.
I went back to r46316 and only two radios. Telnet in and erase nvram and reboot now all three radios but they do not broadcast SSID. I'm missing TurboQAM and NitroQAM support on the wireless adapters page.
Installed KONG's v3.0-r37015M (09/23/1 and radios work but missing one. Rebooted and the missing radio came back but a different one left.
Flashed back to Netgear R8500-V126.96.36.199_1.0.82 which worked. I setup the Router, it rebooted and went into a boot loop.
NMRPflash the same version back.
I have a serial cable to muck with it some more later.