Once in fastboot mode, type fastboot devices to verify connection.
Adding the folder to your system's "Path" allows you to run ADB commands from any terminal window without navigating to the specific folder every time. Android Platform Tools - GitHub Gist Clone this repository at Save ifiokjr/ Android Debug Bridge (adb) | Android Studio Android Adb Platform Tools Download
adb install appname.apk
With great power comes great responsibility. The Android ADB Platform Tools download is safe, but using ADB carelessly is not. Once in fastboot mode, type fastboot devices to