Release ASUS RT-AC86U ALL OFFICIAL FIRMWARES

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Yota

Regular Contributor
I have been mirroring the official firmware of RT-AC86U since a long time ago. now many firmwares are no longer available on the official website. so If you have some special needs, I hope these old firmwares can help you.

DOWNLOAD LINK:

NOTE:
  • I have never implied or agreed to your use of these firmwares, because the old firmware contains many known security vulnerabilities and bugs, and you will bear all risks when using these firmwares.
  • All firmware comes from the asus website.
  • If you flash a firmware lower than the factory version, you may get a brick. You can find the factory version on the sticker of the router box.
  • The host may limit the traffic, please do not download files you don't need.
  • I will not make a promise to make the link permanently available.
  • Maybe there won't be any updates in the future.
  • The change log is only available in Chinese.
  • I don't have a mirror of the source code.
  • Asus owns all rights to these firmwares. If I receive their request, I may stop sharing without telling you.
  • You may need to use Asus Firmware Restoration Utility to flash the older firmware (Asus Guide), please make a backup of the configuration if you want to go back to the current version.
  • I suggest you do a factory default reset after downgrading, but DO NOT reload any configs. You should set it manually.
  • You bear all the consequences, and don't complain when you get a brick or get hacked or get any errors. If you are afraid or don't understand, please don't download it.

SUPPORT MODELS:
  • ASUS RT-AC86U
  • ASUS RT-AC2900 (Use the same firmware)
(GT-AC2900 is NOT support)

FIRMWARE LIST:
(No beta firmware)
Version and MD5 and Comment and Forum thread links​
3.0.0.4.382.11816 346c012ecc0701cf3b4a364422cde42b (The first version of firmware for RT-AC86U)​
3.0.0.4.382.15098 120849e2c8c708aec5475036e3a9c5ec​
3.0.0.4.382.16466 4bdd258dcd60d9d9371ff8b00008e5a3​
3.0.0.4.382.18219 33609a52cd277b25aa8fcc39af7a7e8f (Fixed KRACK vulnerability)​
3.0.0.4.382.18848 414a1d1b3e6010b290e5316bad536f55 (Read more at thread)​
3.0.0.4.384.10007 b041a243410b4a3c87e6dcc63366682e (AiMesh 1.0, read more)​
3.0.0.4.384.20308 d3edbb6ce2274ea99ee219f232d2c12d (Read more)​
3.0.0.4.384.20467 e8f19bc2d808e51867b708e918bb5999 (Read more)​
3.0.0.4.384.20648 31554f9a71f28acc5d3da8d4e7b59902 (Read more)​
3.0.0.4.384.20942 ad08f3a1e88a6ceaf3a5367021f1211e (Read more)​
3.0.0.4.384.21045 3f4a861a854b7dc17c5f8d9f8e93ad7e (Read more)​
3.0.0.4.384.21140 caf32b5ead8501a0dbb7926e37be335a (Read more)​
3.0.0.4.384.32797 0d22564746bd9d10251624c72475058e (Read more)​
3.0.0.4.384.32799 ac2a2fe7132a9567fa8c17ff5c157b71 (Read more)​
3.0.0.4.384.45149 1ca78fe37882cac19fbf9c5a50cb2c0f (Read more)​
3.0.0.4.384.45713 3572b70885cc2a54751ca17aaaa479e9 (Read more)​
3.0.0.4.384.45717 03041f5d8987efc3bc64a63efe2a979f (Read more)​
3.0.0.4.384.81039 eb7a6d3c61575e150c22f95c4aa44cdf (Was quickly removed by the official, this firmware may have serious issues, read more)​
3.0.0.4.384.81049 f09ec9bf293979e8ebe8a8c5bda6317b (Read more)​
3.0.0.4.384.81351 2b73b992d0ea657cae03a918e31a27ad (Read more)​
3.0.0.4.384.81352 c92351241c287643bd39832de852977e (Fixed Kr00k vulnerability, read more)​
3.0.0.4.384.81369 e50909a33311f80b922c61d6edcfd7bd (Read more)​
3.0.0.4.384.81792 2dec1e36715af2f8fb6530ac8246c929 (Was quickly removed by the official, this firmware may have serious issues, read more)​
3.0.0.4.384.81858 dc2cfb7297d8089b4f6022d0105313bc (Read more)​
3.0.0.4.384.81918 892a6e8a8c4e27bdd1c7ff2bfbd92df6 (Read more)​
3.0.0.4.384.81930 c9ee3cbfc16ca9ecd9eed0561fa1145b (Read more)​
3.0.0.4.384.81992 c4d70d592c735c935d711b05908de05c (Read more)​
3.0.0.4.384.82072 2788c2f2e211e7396dc5004ce5226797 (Read more)​
3.0.0.4.386.40451 a707219b5944bc0b55098a4c7fe781f5 (AiMesh 2.0, read more)​

 
Last edited:

Yota

Regular Contributor
Reserved
 

OzarkEdge

Part of the Furniture

Yota

Regular Contributor
Here are 16 firmware releases on the Asus USA site dating back to July 2018:

RT-AC86U BIOS & FIRMWARE | Networking | ASUS USA

OE
Yes, you can find a lot of firmware on the official website, and you can also download the hidden firmware on the official website through link, like this:
https://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC86U/FW_RT_AC86U_300438XXXXXXX.zip
For some firmware that has been permanently removed from the official server, you may only find it in my mirror.
 

KevTech

Very Senior Member
From a security point of view, since some of the later releases addressed CVE or other vulnerability's it would be unwise to run older firmware.
 

OzarkEdge

Part of the Furniture
Yes, you can find a lot of firmware on the official website, and you can also download the hidden firmware on the official website through link, like this:
https://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC86U/FW_RT_AC86U_300438XXXXXXX.zip
For some firmware that has been permanently removed from the official server, you may only find it in my mirror.

I guess I don't understand why I would need old/insecure/expired firmware from an untrusted source.

OE
 

Yota

Regular Contributor
I guess I don't understand why I would need old/insecure/expired firmware from an untrusted source.

OE
Yes, don't trust me, because I don't even trust my cloud storage provider, just download it and check if the hash is same with the official one. I think this may ensure that it has not been tampered with. And I never recommend to use the old firmware, I have related warnings on it, I share it because sometimes it is helpful, for example, you need to fix a brick, Or just test the wireless driver.
 

podkaracz

Senior Member
Yes, don't trust me, because I don't even trust my cloud storage provider, just download it and check if the hash is same with the official one. I think this may ensure that it has not been tampered with. And I never recommend to use the old firmware, I have related warnings on it, I share it because sometimes it is helpful, for example, you need to fix a brick, Or just test the wireless driver.

I did not know about removed firmwares from asus website so that alone makes this thread worth for me. Also you can compare md5sha if you want to be sure as stated above.
 

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