@Kevin_Z I have 3 RE505X mesh extenders, I lost them in the UI when the firmware upgraded to 1.2.2 and had to add them again.  Using TDS as a provider and fiber Ethernet. Previous stable release was the one before this one as I have the router auto-upgrade.  Internet connectivity light goes out when Internet connectivity goes out as well as the admin UI is inaccessible.  The new symptom is that after some time, at least last night, the router recovered and is functioning again.  This is the first time I've been able to see this and confirm it did happen as I had no Internet in the middle of the night.

  @Kevin_Z 

Will this downgrade firmware be made available on the TP-Link support page for the AX55, or will it only be availble to those with active support tickets open.  I am experiencing the same issues as many others on this forum, so i haven't gone through the process to open a support ticket.

  @Kevin_Z 

I had the Archer AX55 for exactly a year as a home router with wireless disabled. I have s separate mesh wireless network with Ruckless. I had zero issues for a year early this week when Internet started dropping few times daily. My ISP is Spectrum. I contact them today just to confirm from their logs on my modem last 3 days and there are no connectivity issues.

Looking at this forum, I indeed got the latest build 1.2.2 Build 20230511. I did not realize I have AutoUpdate enabled so my previous build has to be the last one before this latest version.

I like to get help downgrading to previous version.

Thanks.

  @Kevin_Z 

Kevin, Here are my responses to your questions.

If anyone experiences a similar dropping internet issue after upgrading the AX55's firmware to the latest 1.2.2 version, please help confirm and provide the following details, and we will have a specialist look into this further with the top priority.

1. Who is your ISP, and what kind of WAN Connection Type you're using on the AX55?  
    ISP is Spectrum, 500 Mb/s cable connection, GE interface to WAN connection on router

2. Do you connect any EasyMesh or Onemesh extenders to the network? How many extenders? What are the models?

Note: If there are EasyMesh or Onemesh extenders in the network, please verify if the devices are connected to the AX55 wireless network or connected to the extenders' when they drop the internet.

   I disabled the wireless function on router, no extenders. I have a separate wireless mesh networks using Ruckless Wireless.

3. Do you remember the previous stable version of firmware for AX55? Is it the previous 1.1.8 version?

   I don't know the previous version but I have "autoupdate" of firmware enabled since I installed the router a year ago so must be the version prior to 1.2.2

   Prior to this latest update, I had no issues with this router.

4. How about the LED status on the AX55 when the internet drops on some wireless client devices? Can you login to the web management page of the AX55 when there is no internet on the wireless clients but it still shows connected to the network?

   Internet connectivity lights went out during outage and I cannot login on to the web management page. 

If the dropping issue doesn't come with the AX55 firmware update, please follow these troubleshooting suggestions to solve it:

Troubleshooting: Unstable wireless connection on TP-Link router

  @Kevin_Z 

I am having these issues as well. The router will kill off the connection to all of my devices slowly and then I won't be able to log into it via Tether despite the lights being on. I also have an AX55 and an AX1800