[How to] Upgrade Bose AE2W bluetooth module to general 3.5mm plug
1. Buy AE2W bluetooth module from amazon or aliexpress 2. Check it works or not. 3. Unscrew 2.5mm plug parts. 4. Disassemble and check which pin is connected to which plug contact. 3.5mm plug contacts are So, I check each pinout to each contacts to verify which one is L|R|GND. 5. Solder it one by one. then assemble it. 6. It works great with UE4000 even wirelessly using BT technology.