WiFi Change Connected Watch 3 - No Compatible device

Using Galaxy Watch Studio Since November
Connected via home WiFi and created downloaded
many watchfaces to Watch 3
Got a new S21 Ultra
Did Connect to new Phone
This reset the watch and lost all my created downloaded watchfaces
Using New S21U as WiFi Access Point Hotspot
In Galaxy Watch Studio
Laptop with GWS running on it is connected to same subnet as watch 3
Can Ping Watch
Enter Watch 3 IP address in Project Run on Device
GWS does not scan for device
Get the ERROR MSG No compatible device

Hi @pat1606883286,

Did you accept the RSA acknowledge key in your watch? If you didn’t, please reboot your watch by holding the home key button pressed for about 15 seconds or until it says rebooting. After that try the steps below to connect your watch to GWS.

  1. Make sure again your PC and Watch are connected to the same network, and the Watch has the developer and debugging modes turned on.
  2. Go to the top-right corner on GWS interface and click Run On Device icon.
  3. Now, click on ( + ) sign and insert the IP of your watch and click OK .
  4. Keep a close look on your watch, a pop up will be shown to accept the RSA key and you have to accept it very quickly as it will stay for a few seconds. If you miss, it will never come back.
  5. After accepting the RSA key, your watch will be connected to GWS automatically.

N.B. Sometimes you need to do step 3 for several times until it can find your watch and also keep your watch awake at that moment.


Accepting the RSA key and a reboot fixed the problem.
Thank you Pat

Glad you have resolved the issue and welcome.