Transfer many files from android to pc, without usb and wifi
Install Astro File Manager with Astro Bluetooth Module. Go to Networks page of Astro File Manager (using toolbar) and tap Bluetooth icon. On next screen, turn on Bluetooth and check OBEX FTP Server.

After pairing, use Bluetooth software on PC to browse file system of device (almost all software work as OBEX FTP client). You can copy an entire folder from device to PC. Done!