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Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1

Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1

Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1
Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1
2025-10-16 02:02:01 - last edited 2025-11-16 14:33:52
Tags: #Firmware Update #VPN
Model: Archer BE550  
Hardware Version: V1
Firmware Version: 1.2.1

Hello, My Wireguard VPN Client works fine as expected on BE550 firmware V1.1.2 (rel18331), but Wireguard VPN Client do not pass anything on BE550 after upgrade firmware to V1.2.1 (1.2.1 Build 20250813 rel.27119).  

When enable Wireguard VPN on Client App, it said "connected", but no traffic pass through the BE550 anymore.

Please let me know if i could downgrade the firmware to V1.1.2. I will appreciate if tell me the solution or send me the firmware fix.

 

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#1
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1 Accepted Solution
Re:Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1-Solution
2025-10-16 10:39:55 - last edited 2025-11-16 14:33:52

  The problem was solved. After I downloaded the firmware Archer BE550_V1-1-2-1-20250813-rel27119 and manually upgraded the firmware, I found that WireGuard VPN was working properly.

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#2
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Re:Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1-Solution
2025-10-16 10:39:55 - last edited 2025-11-16 14:33:52

  The problem was solved. After I downloaded the firmware Archer BE550_V1-1-2-1-20250813-rel27119 and manually upgraded the firmware, I found that WireGuard VPN was working properly.

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#2
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Re:Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1
2025-10-16 12:26:34

Yeah, I ran into the same issue after updating my router too. The new firmware often messes with WireGuard compatibility. You can downgrade to version 1.1.2 from the TP-Link support site—just remember to turn off auto-updates first. I had to do the same while configuring my Nebroo setup, and the connection worked perfectly again.

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Re:Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1
2025-10-18 09:12:37

  @yourpie I know how to upgrade TP-Link Wireless Router, but I don't know how to downgrade. I tried to upload firmware v1.1.2 in the menu: System->firmware update->local update, it will appear "upload error" when upload v1.1.2 firmware file. 

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Re:Wireguard VPN Client unable to connect BE550 V1 after upgrade firmware from V1.1.2 to V1.2.1
2025-10-20 11:31:19

 Hello  @Ian_Guo ,

So is your current situation that WireGuard VPN is working properly or not?

I noticed that you mentioned that you cannot downgrade to 1.1.2.

Ian_Guo wrote

  The problem was solved. After I downloaded the firmware Archer BE550_V1-1-2-1-20250813-rel27119 and manually upgraded the firmware, I found that WireGuard VPN was working properly.

 

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: △New Firmware Update for Archer BE260/Archer BE400 to Support VPN Merge, New ECO Mode, and More △Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN △Tether KidShield Test Recruitment - Safeguarding Children's Online Experience If you found the post or response helpful, please click Helpful. If an answer solves your problem, click "Recommended Solution" so that others can benefit from it.
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