Firmware Update: Asus RT-AC66U

Asus has released new firmware for the RT-AC66U. This router can provide clients with both wired and wireless network access. Wireless is supported up to the 802.11ac standard, with a speed of up to 1.3Gbit/s. There are also two USB ports, so that a printer or external storage can be shared over the network. This release fixes an issue with wireless connectivity on the 5GHz band.

ASUS RT-AC66U Firmware version

All regions can use this version.
[Important] Please press the reset button more than five seconds to reset the router after firmware updated

  • Fixed the 5GHz N+AC mode UI issue.

Version number
Release status Final
Website Asus
File size


License type Freeware