Why does my phone say it cannot guarantee the authenticity of the file I am downloading?
This is because you are not downloading the file directly from Sprint.
You should normally just press Continue and download the file.
I've been told that you need to make a deal with Sprint, pay $400 for a
VeriSign certificate, and add some special tags to sign the .gcd and .jad
files that I spit out. Sorry, I don't make enough to shell out that kind of
money for .jad files and then figure out whatever I need to do for .gcd
files.