Why my map update fail asia my sync fail

Try connecting your watch to a USB wall outlet AC adapter source while attempting to install the map updates via WiFi through the map manager menu on your S70. Make sure to not use a computer USB power source, or other USB source that accesses storage...as this will put your watch into MTP mode, which locks the display into USB mode and does not allow menu or WiFi connection with that type of connection. 

Please refer to the Garmin Support articles linked below for further information regarding the Map Manager, WiFi connection, and installing software updates for further reference if needed: 

• Using Map Manager on Garmin Approach Golf Watches
• Update Golf Courses and Device Software on an Approach Golf Device
• Installing the Latest Software and Course Updates to an Approach S70 Watch

I hope this helps! Please let me know if any assistance is needed and I would be happy to help. You can also contact Garmin Support to discuss the concern live with one of our experts to help determine further solutions for your concern. 

Keep your watch connected to a non-computer USB charging source while attempting to update the maps via WiFi connection. 

If you are located further away from the WiFi router when attempting to install the updates, move the watch closer to the WiFi router to avoid any disconnections during the install of the maps. 

The steps outlined on the support page linked below can help to troubleshoot the WiFi connection more in-depth: 

• Adding, Removing, and Troubleshooting Wi-Fi Networks With a Compatible Garmin Outdoor Watch

If you continue to have concerns, I recommend connecting the watch to your home computer, and install the updates via Garmin Express. Then once the maps are up to date, see if the concerns with the map syncing continue by checking for updates in the map manager.