Not so unusual to have both a hardware failure and a software bricking co-incidentally because the latter can happen if the connection is flaky during a software or map update. Many ppl get away with a dodgy usb for a while, holding a cable in a certain way so it'll charge and/or connect to computer. Unfortunately nuvi 50 and nuvi 14xx seem very prone to USB socket failure, even more-so than other series. Usually it's an easy fix to re-flow the solder connects to the board however it's best to further strengthening the repair if possible. These things are not hand-soldered in the factory, all common SMD components are cooked-on in mass production.