Known Issue: Sync Issue with Edge 510/810

My 810 always used to synch with connect mobile perfectly.
Now it won,t synch at all.
I have updated my 810. My iPhone6. I have deleted an reinstalled the latest copies of Garmin connect mobile, express and Garmin update.
I have deleted all folders and rebooted both the device and the iPhone.
Why has it stopped connecting, its always been perfect.
New Fenix 3 does it perfectly.
I emailed support today. Awaiting an answer.

Didn't work.

We are currently aware of various issues occurring when initially attempting to sync an Edge 510/810 using the Garmin Connect Mobile. This issue may include a red "sync error" appearing at the bottom of the screen.

This issue will be fixed with an update to Garmin Connect Mobile, which should be released soon.

If you are experiencing this issue, the following temporary workaround can be attempted until the update is released:

NOTE: Before following these steps, please manually upload the rides from your Edge device to the Garmin Connect website. You can do this by following the steps listed in the following FAQ article: How do I manually upload data from USB devices to Garmin Connect?

1. Power on your Edge device.
2. Tap on the "Folders" icon.
3. Scroll down and Tap on "Delete".
4. Tap on "All Rides".
5. Tap on the Check Mark to confirm deletion.
6. Once deleted, reboot both the Edge and Android device.

You should will now be able to sync new rides from your Edge to the Garmin Connect Mobile Android app without experiencing this error.

I tried this hasn't worked.
My 810 always worked perfectly before!
My F3 does it perfectly!
I have uninstalled and reinstalled the latest copies of Garmin connect mobile, Express, Garmin Updater and Iphone6 OS.
No Joy.

Software updates for the Edge 510 and the Edge 810 have been released today.

Edge 510 v3.50 software update is now available. Changes from version 3.40 to 3.50:

o Improved connection stability with Garmin Connect Mobile and fixed sync issues.
o Made several improvements to course routing and general course experience.
o Implemented improvements for torque effectiveness, pedal smoothness, and cycling dynamics data. This includes a fix for displaying torque effectiveness and pedal smoothness data in summary pages for left side only power meters.
o Fixed several issues with data fields displaying incorrect data.
o Fixed an issue where the backlight time out was not being observed when the Edge is plugged into external power.
o Fixed an issue with the keyboard not being displayed properly while searching in the Course, Segment, and Workout menus.
o Added battery percentage to the Shimano Di2 sensor about page.

Edge 810 v3.60 software update is now available. Changes from version 3.40 to version 3.60:

• Improved connection stability with Garmin Connect Mobile and fixed sync issues.
• Made several improvements to course routing and general course experience.
• Implemented improvements for torque effectiveness, pedal smoothness, and cycling dynamics data. This includes a fix for displaying torque effectiveness and pedal smoothness data in summary pages for left side only power meters.
• Fixed several issues with data fields displaying incorrect data.
• Fixed an issue where the backlight time out was not being observed when the Edge is plugged into external power.
• Fixed several issues with Where To? search functionality.
• Added battery percentage to the Shimano Di2 sensor about page.