Samsung m100 "Uproar" firmware?

Saw the forums here but couldn't find an answer to my question, maybe someone can help me out.

I have been using the Uproar (w/ the Sprint service) for a few years, but recently passed it on to my father in a nearby city. He is now having major connection/coverage issues that he didn't have with his other phone (a really old Nokia that I handed down to him a while back also).

I was wondering if there has ever been any Firmware for the Uproar that might help. If so, can I find it free, and can it be done via the USB cable that it came with?

thx much,
ruyen

anyone? please :)