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RT-BE92U Persistent Thermal Zone Faults

RicoSuave
Star III

First post here so bear with me if I miss anything. Since purchase, my RT-BE92U has been plagued with the same issues others have posted here. Up until the new firmware version dropped, I was having constant problems with network stability. I am currently running the latest firmware version (3.0.0.6.102_37435) and a lot of the issues seem to have been resolved except for one. Before the firmware update, I was seeing intermittent thermal zone errors in the system log. Since applying the update, I am consistently getting the following errors that appear every 3 seconds exactly:

Jan 4 18:29:52 kernel: read_bpcm_reg_direct_keyhole: Wait for completion failed, devAddr 0x3, offset 24, idx 2
Jan 4 18:29:52 kernel: thermal thermal_zone0: Failed to get RAIL 0 temperature, ret=256
Jan 4 18:29:52 kernel: thermal thermal_zone0: Failed to get temperature, ret=-1
Jan 4 18:29:52 kernel: thermal thermal_zone0: failed to read out thermal zone (-1)

On occasion, the errors coincide with a drastic decrease in wireless network performance. Under normal conditions, when connected to the 6GHz network, my wireless network download speed averages around 1100Mbps. This will drop to a nearly unusable 2-3Mbps. The 2.5GHz and 5GHz networks also see a decrease in speed to around the same 2-3Mbps. Wired clients seem unaffected. Once I perform a hard reset to the router, it seems to correct the speed issue for a while, but the thermal zone errors continue to persist. This seems to happen anywhere from once a week, to every day. Performing a hard reset isn't something I want to nor should have to keep doing to correct the issue every time it happens. Please let me know if there is anything else I can do to stop this from happening. I am getting very close to returning this router and exchanging it for a different brand. Thanks.

176 REPLIES 176

Hi all,

the latest firmware version 3.0.0.6.102_37500 is now available. Please update to this version and check if the issue persists. ASUS RT-BE92U|WiFi 7|ASUS Global
If the issue still occurs, please report it immediately and send us a private message with the following details for further verification:

  1. Issue type (CPU 100% / Reboot / Thermal log abnormality)
  2. Product serial number
  3. Issue report submission time
  4. Email used for the issue report
  5. Time when the issue occurred
  6. Device MAC address
  7. Current network topology diagram

Thank you for your cooperation.

bobo138
Star II

37872 the latest I have. Thermal Issue and Wifi reset still persist 

Hi @bobo138 ,

please visit the official website to download and update to the latest version, then observe the situation. 

If you have any questions, feel free to contact us. Thank you.

https://www.asus.com/networking-iot-servers/wifi-7/all-series/asus-rt-be92u/helpdesk_bios?model2Name...

kjm
Star I

Just moved from the beta to new firmware, setup now:

Router/AiMesh Firmware verion
RT-BE92U 3.0.0.6.102_37500 from beta on 2/18/2025
ZenWiFi BD4 3.0.0.6.102_56745
Internet Speed: 100Mb down, 10Mb up
IPv6 off - desired to be on
UPnP off - change from default

Thermal messages are not appearing, CPU % below 25% on all nodes

IPv6 is on, still no thermal messages