PC
ⓐ Device manager.
ⓑ Right click on "Bluetooth Peripheral Device" that you want.
ⓒ Select "Update Driver Software...".
ⓓ Choose "Browse my computer for driver software".
ⓔ Choose "Let me pick from a list of device drivers on my computer".
ⓕ Select "Ports (COM & LPT)".
ⓖ Select "Microsoft" at "Manufacturer" list.
ⓗ Finally select "Standard Serial over Bluetooth link"
ⓘ Right click on bluetooth program.
ⓙ Choose "Receiving File"
↓
Xperia Arc
ⓐ Choose "Share" (Jpg file or Mp3 File)
ⓑ Select "PC" at bluetooth device tap.
↓
PC
ⓐ Select the folder to save file.
ⓑ Click 'Finish'
ⓒ Open the folder