Asus DSl-N66u Firmware Home › Forums › Wireless Routers & Modems › ASUS › Asus DSl-N66u Firmware Tagged: DSL N66U This topic contains 4 replies, has 2 voices, and was last updated by Rabbitbob 2 weeks, 4 days ago. Viewing 5 posts - 1 through 5 (of 5 total) Author Posts August 31, 2019 at 4:40 pm #4107 RabbitbobParticipant Hi.. Can someone please explain the firmware update procedure for this router. There seem to be different series of FWs available, I have downloaded: FW_DSL_N66U_1113 and DSL-N66U_v126.96.36.199_743-gf5b4545 Logic suggests that the 9 series is the later of the two, but when I try to update it I just get an ‘Invalid’ message. Have I missed something? Thanks in advance, Steve August 31, 2019 at 5:11 pm #4108 UK SentinelModerator The latest firmware for the DSL-N66U from ASUS download servers is Version 188.8.131.52 (2016/04/14) The latest firmware (beta) from ASUS DSL-N66U_v184.108.40.206_743-gf5b4545 (01/07/2019) Basically, ASUS stopped officially supporting this model a few years back but do provide updates (beta) out of goodwill Not sure where you obtained your version FW_DSL_N66U_1113 from ? What is you current firmware version on router ? In a completely sane world, madness is the only freedom (J.G.Ballard). August 31, 2019 at 5:23 pm #4109 RabbitbobParticipant Thanks… I’ll check the router.. So, can I use the beta? Do have to unzip the archive first? I got the firmware from here https://drivers.softpedia.com/get/Router-Switch-Access-Point/ASUS/ASUS-DSL-N66U-Router-Firmware-1-1-1-3.shtml Thanks again for the quick reply and advice … Steve August 31, 2019 at 5:43 pm #4112 UK SentinelModerator I see , that firmware is a couple of years old. My firmware is from ASUS DSL team and after you have download the ASUS DSL-N66U_v220.127.116.11_743-gf5b4545 it is in a .zip format (compressed) so will need unzipping ? The beta firmware generally work well and keeping the routers firmware upto date ensures the latest security fixes are applied In a completely sane world, madness is the only freedom (J.G.Ballard). September 2, 2019 at 12:11 pm #4125 RabbitbobParticipant Thanks.. it worked faultlessly.. Cheers Steve Author Posts Viewing 5 posts - 1 through 5 (of 5 total) You must be logged in to reply to this topic.