1) Have your phone drivers installed on the computer.

2) Enable the developer mode and usb debugging on your phone, as well as allowing unknown sources to install the APK that was not downloaded from the Playstore.

3) Transfer the APK from the computer to your phone.

4) Install the APK and open it until you ask for the Internet and it comes out only when you accept.

5) Install ADB on your computer in administrator mode and leave everything as default and say yes to everything.

6) Close all the desktop windows except this one, so they don't bother us.

7) Open the command console in administrator mode, (for those who do not understand: Start button-search "write CMD" and what comes out in the search, place with the right button and the option to run as administrator.

8) At the command console (black screen), type:
CD C: \ ADB and hit the enter or enter key.

9) With the phone connected to the computer, write in the ADB devices console and enter,
It must show a series of numbers in the console followed by the word device, if after the series of numbers it says unauthorized, it means that they are not paying attention to the phone in the announcement that asks for authorization, if that happens, unplug the cable and plug the computer.

10) Make a Viago Backup by typing in the console: adb backup -f viago.ab -apk -noshared com.garmin.android.apps.viago
Look at the cell phone that is asking for a password, write "hello" as the password and make a copy. It takes about 10 seconds to copy.

11) Check that in the folder C: \ ADB there should be the backup file called:
viago.ab whose size is approximately 29 megabytes. If the size is 1 k it is because the viago application was forced to stop on the phone

This is to install viago on non-root phones valid from android 5 to android 10.