@Balloni honestly I had no issues with 1.7.1 or .3. I've been very happy with my M5s. 

  @TP-Link M5 1.7.3 is a nightmare for me so far. I wish I could roll back to 1.7.1... after updating, about half of the devices in my home lost wifi connection (including all Apple devices: 2 iPhones, 2 iPads, 2 Macbooks, and an Apple TV). If I try to reconnect (or even delete and re-add the wifi credentials) then I get connection for a few seconds before getting thrown off again. I had to disable Beamforming and Fast Roaming in order for things to work, but if I touch any of these settings then the whole thing comes crashing down again. No idea what was changed in 1.7.3, but I wish I had not upgraded... :-(

Is there any way to downgrade to 1.7.1?

  @TP-Link UPDATE ON PREVIOUS MESSAGE:

After a lot of troubleshooting I found the real issue. For years, I've had two of my Deco units hardwired to the ethernet, because of spotty reception at the far end of my building. This never caused any issues, until firmware 1.7.3 -- two hardwired Decos are no longer an option, as they start fighting with each other and cause the DHCP server of my cable modem to go haywire. Unplugging the cable from the (non-master) unit solved the problem.

  @cordswires if I understand correctly, you use your Deco in access point mode, not in router mode.

If Yes, have you tried to togle smart DHCP in More->Advanced?

If you use router mode, that's strange it has worked well before because in router mode, only the main deco should be wired to you ISP router.

  @Nardol yeah, I use the M5s in access point mode. What is the Smart DHCP setting? Is it new? I assume it should be disabled (as my cable modem is already handing out DHCP addresses) but even when disabling it, the problems persisted... and I don't assume *enabling* the option would be a good idea?

  @cordswires For more information about smart DHCP you can read it: https://community.tp-link.com/en/home/stories/detail/1804

If I remember correctly, smart DHCP is enabled by default, you can check in the Deco app, go to the last tab (named "more") then in advanced->smart DHCP

Smart DHCP has been implemented in M5 firmware version 1.6.0.

Hi All,

After upgrade my Deco M5 to 1.7.3 Build 20230906, I found that both download and upload throughput are becoming obviously lower.

Before upgrade, tested with SpeedTest or Fast.com it was 300Mbps, but after upgrade to 1.7.3 it becomes around 100Mbps.... 

I verified the CPE throughput with Ethernet connection, it's still 300Mbps, so I'm sure that it's Deco M5's problem.

I'm just wondering if anyone encounter the same issue with me?

Thanks.

  @TP-Link two of my three M5 updated perfectly through the app, but one remains on 1.7.1. The app tried a few times to update the one M5 remaining, but the update failed every time. Now the app is simply ignoring the M5 stuck on 1.7.1.

I tried a manual update via the IP address, but the screen asks for a password which the document states in the email address used to set up the account, but this doesn't work, neither does the wifi password, so I am stuck.

How do I go about updating my last M5, or is this impossible now?

Confirmed the lowered throughput issue is caused by firmware 1.7.3 Build 20230906

I just downgraded my Deco M5 with 1.7.1 Build 20230608, both download & upload throughput are back to normal as before.

  @TP-Link any chance to hide IoT network ssid?