If you upload this app it won't actually install an app, but will instead update your GPS with data that'll help it to get a GPS fix more easily for the next few days after it is installed.
I'd be interested to hear how well this works for you, but hopefully it'll go a long way towards helping to lower the time taken to get a GPS fix the first time.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I just added an 'Assisted GPS' app to the App Loader:
https://banglejs.com/apps/#assistedgps
If you upload this app it won't actually install an app, but will instead update your GPS with data that'll help it to get a GPS fix more easily for the next few days after it is installed.
I'd be interested to hear how well this works for you, but hopefully it'll go a long way towards helping to lower the time taken to get a GPS fix the first time.