Thank you for reaching out about your Fire TV 4k Select not appearing in Vega Studio.
I noticed that you mentioned you’re using a peer’s token to temporarily set up the device. This could be the root cause of the issue - the device needs to be registered under the same Amazon developer account that you’re using to log into Vega Studio.
Please check the following:
Verify your device is registered: Go to Amazon Developer Sign-In and confirm that your Fire TV 4k Select Serial Number appears in the list of registered devices.
Account matching: Make sure the Amazon developer account you’re logged into on Vega Studio is the same account that owns the device registration. Since you’re currently using a peer’s token on the Fire Stick, this mismatch could prevent the device from appearing in Vega Studio.