- Force close your PebbleApp on phone
- Download and install an AndroidApp called Packet Capture (GooglePlay source)
- Run that app, and install its certificate, and capture packet, DO NOT close it.
- Run your PebbleApp again, now you can see all preview image on all Watchface/WatchApp
- Press Home to desktop, now you can stop the PacketCapture, and uninstall it(and its certificate).
Unfortunately, if PebbleApp was closed by your phone (some kind of PowerSaving reason), you have to do all steps above again......
That's why it been called an unofficial way...