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Forum Discussion
hawii
Mar 04, 2026Aspirant
ORBI853 wired backhaul speed stuck at 400M, wireless backhaul is normal
My ORBI 853 device is a product from China. I used nmrpflash to downgrade it to the lowest version, 3.1.5.23, enabled telnet, then navigated to the "bin" directory, executed "burnsku 0×0002," reboote...
CrimpOn
Mar 04, 2026Guru - Experienced User
Thanks for the quick response. So, after enabling telnet in order to change the Region setting, updating firmware to current versions disables telnet again?
hawii
Mar 04, 2026Aspirant
The answer is yes, upgrading to the new firmware will automatically disable telnet, unless you downgrade to the factory firmware again.