Galaxy Watch Ultra (Z8GT SM-L705U) will not connect with Watch Face Studio

[JAM1410]

Hi team.

Did anyone was successful connecting newest Ultra watch (model SM-L705U) with Watch Face Studio (version 1.9.5) over WiFi to test watch face on the hardware? In my case no matter what I do the watch is not connecting. No matter what I do I'm getting the same error:

 

All is set as recommended in the connection guide:

WiFi is ON, connected to the same network over WiFi.
Bluetooth is OFF
ADB debugging is ON.
WiFi debugging is ON.
IP and port are entered.
Pair code and pair port are entrered.

I tried everything including resetting watch to factory settings to no avail. I even created phone hotspot network to  which I connected watch and laptop on the same 2.4 GHz band. Nothing make a difference. I restarted both devices. I revoked debugging authorizations.

For all the numerous tries that I did I get the same log records with the following message (obviously with different time stamp):

[WFS-1.9.5][main][12/31/25, 13:34:17] [Object.WiFiLog(wifi-control.js:49)] WiFiControl: Encountered an error while acquiring network interface connection state: [object Object]

I'm familiar with connection because I was using my old generation 5 galaxy watch to connect with no issues. Is this a problem with new Ultra watches or just an issue with my particular watch?

BTW watch software is:

One UI version 8.0 Watch
Software version: L705USQU2BYK1  SM-L705UZA4XAA
Google play services: 25.47.30 (240300-833691957)
System version: 16
Wear OS version 6.0
Wear core services: 1.31.58.829364773

[Samsung_Moderator · Accepted solution]

Thank you for reaching out. I can certainly understand your frustration with not being able to get your Watch Ultra 2025 to connect to Watch Face Studio. As you are wanting to test a watch face with the hardware, I would recommend reaching out to our developer support team directly at: https://developer.samsung.com/support