Not able to get GPS signal after updating firmware to version 7.80

And what have you tried to fix it?

Have you done the pressing light button for 15s?
Have you removed CPE.BIN from REMOTESW? And synced again.

I will try to press the light button. But not sure how to remove the CPE.BIN from REMOTESW, please guide me

Before you need do that, do the hard reset then open an activity iand put the watch outside with a clear view of the sky. This will update the CPE file anyway. Change the Activity Power Save Timeout to Extended as that will leave it open for 25 mins instead of 5.

Note

TO change that setting:

• Select a GPS activity eg Run
• Press and hold middle left to access settings
• Scroll down to Power Save Timeout
• Change to extended.

This is a per activity setting so will need changing on any other activity you might want to change