Asus support center helps you to downloads drivers, manuals, firmware, software; find faq and troubleshooting. The latest firmware version will include updates from earlier firmware. for a configuration parameter existing both in the old and new firmware, its setting will be kept during the upgrade process. in case the upgrade process fails, rt-ac66u enters the emergency mode automatically. the led signals at the front of rt-ac66u will indicate such. Latest advancedtomato firmware releases and downloads for asus rt-ac66u.
Note: the rt-ac66u b revisions' specs are more similar to the ac68u. build information. use the asus-rt-ac66u/ folder except for rev b1/b2, use the asus-rt-ac68u/ folder. for download locations and other info see where do i download firmware in the faq. Router setup router installation router utility rt-ac66u wireless asus firmware download asus rt-ac66u wireless router utilities 4.2.6.0 for windows top alternatives free. Download asuswrt-merlin for free. alternative firmware for asus wireless routers. asuswrt-merlin is a third party firmware for select asus wireless routers. based on the asuswrt firmware developed by asus, it brings tweaks, new features and other improvements to the original firmware, while retaining its performance and ease of use..
