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Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked

Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked

Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked
Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked
a week ago
Model: Deco X5000  
Hardware Version: V1
Firmware Version: 1.6.12 Build 20260513 Rel. 20500

Hi everyone,

I am experiencing severe network instability with my 3-node Deco X5000 setup, and it all started right after a recent firmware upgrade.

Previously, on firmware version Deco X5000(US)_V1.60_1.4.0 Build 20241212, everything was running flawlessly. The network was rock solid, and I had zero issues.

However, ever since updating to Deco X5000(US)_V1.6_1.6.12 Build 20260513, my entire mesh system drops connection constantly. All 3 Deco nodes (including the main one connected to the modem) will suddenly turn solid red for a few seconds, cutting off all internet traffic, and then slowly recover back to solid green. This loop happens multiple times throughout the day.

My setup requires the Decos to run strictly in Router Mode because I rely heavily on Port Forwarding and MAC Cloning features. I have already optimized my local network to a standard /24 subnet (255.255.255.0) to minimize broadcast traffic, but the issue persists. It seems like the new firmware is suffering from a memory leak or processing overload when routing a large volume of local clients.

Looking online, I have seen numerous recent reports from other users experiencing the exact same behavior after this specific update. It appears to be a widespread bug with build 20260513, yet we are currently locked out from performing a firmware downgrade through the standard web interface.

Can TP-Link support please investigate this issue? Are there any official beta firmwares or hotfixes available to address this routing/stability bug?

Thank you.

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3 Reply
Re:Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked
a week ago

  @gLeW 

Hi, thank you for your feedback. 

 

We take the network instability you reported with the Deco X5000—which occurred after the firmware upgrade—seriously. We would appreciate it if you could provide the following information, as it will help us diagnose the problem.


  1. Who is your internet service provider? 
  2. Please describe your network diagram. Are the satellite Deco nodes connected to the main Deco via Wi-Fi?
  3. How many client devices are connected to the Deco network? 
  4. How long do you need to wait for the Deco to restore the internet connection automatically? When the main Deco has a solid red light, please disconnect it from the modem and connect a laptop/PC instead. Do you have an internet connection on your laptop/PC?

 

Best Regards

>> Check What's Currently Going on With Deco >> Deco X50/X50Pro/X50-PoE Pre-Release Firmware 1.7.0 Introduces DoH/DoT, Channel Selection, and More! >> Deco XE75/XE5300/XE75Pro V1 Pre-release Firmware 1.5.0 Introduces DoH/DoT, WireGuard VPN, and More!
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Re:Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked
a week ago

Hi  @Solla-topee thanks for your reply


  1. Who is your internet service provider? 

XFINITY (BRIDGE MODE)
  2. Please describe your network diagram. Are the satellite Deco nodes connected to the main Deco via Wi-Fi?
Xfinity to main Deco Cable, the other 2 via Wifi
  3. How many client devices are connected to the Deco network? 
Around 40
  4. How long do you need to wait for the Deco to restore the internet connection automatically?
between 5/10 seconds.
When the main Deco has a solid red light, please disconnect it from the modem and connect a laptop/PC instead. Do you have an internet connection on your laptop/PC?
Slready try, i connect my old Linksys router for whole 1 day and dont have any issue, again put the tplink Decos and start Again

I have a small server with a few dockers Runing and not to much more.

 

It’s really strange because, at times, I can go 5 or 6 hours without any issues, yet at other times, it disconnects more than 30 or 40 times in a single hour.

I’ve read on various online forums that this is a common issue following the latest firmware update; what surprises me is that they haven't fixed the bug—or at least provided an option to downgrade to the previous firmware version, back when these problems didn't exist.

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Re:Deco X5000 constant red light / WAN drop after recent firmware update - Downgrade locked
Friday

  @gLeW 

Hi,
I recommend troubleshooting and analysis of the network instability phenomenon in the new firmware. If you are willing to troubleshoot further, please send an email to forumsupport.usa@tp-link.com with the following information:

 

Subject: [Forum Escalation][ID 868078] Deco X5000 constant red light / WAN drop after recent firmware update
Forum Nickname: [User Provided]
Thread URL:  https://community.tp-link.com/us/home/forum/topic/868078
Model&Version:  [User Provided]
Description: [User Provided]
Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]

Once sent, a ticket will be created in our support system, and a team member will follow up.

 

The Deco X5000 does not support downgrading firmware via the web UI. However, you can try the firmware recovery method if necessary.
How to Fix a Bricked TP-Link Deco Using Firmware Recovery
 

Best Regards

>> Check What's Currently Going on With Deco >> Deco X50/X50Pro/X50-PoE Pre-Release Firmware 1.7.0 Introduces DoH/DoT, Channel Selection, and More! >> Deco XE75/XE5300/XE75Pro V1 Pre-release Firmware 1.5.0 Introduces DoH/DoT, WireGuard VPN, and More!
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