If you have installed the latest COROS app update (V2.9.29) and your iPhone is on iOS 12 or older versions, you will experience app crashes due to compatibility issues.
Don't worry as we have come up with a workaround for you to revert back to the last app version until a newer update is released in the App Store.
Please follow the steps below on your iPhone to continue using the COROS app and syncing it with your watch.
Download and install the TestFlight app from the App Store.
Open the link below in Safari.
Tap on Start Testing and you will be directed to open TestFlight automatically.
Tap on ACCEPT and INSTALL to replace the current app version. You will not lose the app's data.
Open the COROS app from TestFlight or from the homepage on your iPhone.
We apologize for any inconvenience caused by this issue and will release a newer update in the App Store soon. For more help, please contact email@example.com.