Expand build instructions.

README.md

@@ -14,8 +14,10 @@ Connect the GPS module to power and the USART using GPIO pins 9 (3.3V), 11 (GND)
 
 1. Clone the [flipperzero-firmware] repository.
 2. Create a symbolic link in `applications_user` named `gps`, pointing to this repository.
-3. Compile with `./fbt fap_gps`. This will create the `gps.fap` binary.
+3. Compile with `./fbt fap_gps`.
+4. Copy `build/f7-firmware-D/.extapps/gps.fap` to `apps/Tools` on the SD card (directly or using [qFlipper]).
 
 [Adafruit Ultimate GPS Breakout]: https://www.adafruit.com/product/746
 [minmea]: https://github.com/kosma/minmea
 [flipperzero-firmware]: https://github.com/flipperdevices/flipperzero-firmware
+[qFlipper]: https://flipperzero.one/update