completed BEST MOD for GBA SP: USB C for both charging and audio jacket 

inspired by 666Gothicgirl who had released the mod firstly on youtube, thanks:
• The first GBA SP with ...
You can get the detail soldering schematics and 3D print part file from the links below:
www.ishoug.com/...
Finally completed! you need also sloder 6 wires for using USB-C as charging socket and audio, so you don't need to carry another odd GBA SP charging wire and a SP audio toggle.