Is it possible to flash a phone without plugging it into your pc?

[ljay67]

I broke the usb port on my lg voyager and don't have the supplies (if you will) to repair it. Does anyone know if I can do anything inside the phone's user interface and software to sort of flash it to metro pcs? Also, is it true that I can write a prl to the phone via bluetooth? And lastly, if I go to metro pcs and have them add the esn to their database for the $25 the guy at the counter said it costs, will that automatically make any call I make redirect to a metro pcs tower?