TP-Link AC2600 unable to connect to RT-AX88U with firmware 386.1. Works with 384.19

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New Around Here
When I bought the Rt-AX88U, I was unable to connect my TP-Link AC2600 range extender with the router using the original Asus firmware. I heard of Merlin firmware so I decided to replace the original firmware with Merlin rel. 384.19. Bingo, all was working perfectly. Yesterday I noticed there was a new firmware release (386.1) so I installed it but doing but my TP-Link AC2600 stopped working. I had to go back to firmware 384.19 to get it back online.
Anyone can tell me what changed in the new firmware causing my range extender to stop working?



Part of the Furniture
Welcome to the forums @Andrepaul.

About a million things changed. :)

Security fixes, possibly updated drivers, newer methods for Wi-Fi compliance, AiMesh v2.0, etc. (see changelogs for some of the details - see GitHub for more).

Edit: the complete post was interrupted as I was rebooting the customer's router. :)

Changelog | Asuswrt-Merlin (

GitHub - RMerl/ Third party firmware for Asus routers (newer codebase)

A full/proper reset may help.

Best Practice Update/Setup Router/AiMesh Node(s) 2021
Last edited:

Ronald Schwerer

Very Senior Member
Repeater don't seem to behave well on all 386 that I've tested. Had many log messages (paraphrasing) about not able to assign IP to (client MAC) since it isn't a AiMesh client. Sorry, logfiles have rolled-over so I can't quote it verbatim.

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