Question regarding WM6.5 and Diamond

[thomlanphear]

I know probably a hundred people will say I should search for this but I have and I am still unsure so I thought it would be better to ask.

I want to upgrade my Diamond to Windows Mobile 6.5. I see that there are alot of different options and the ones I have download I think require me to unlock my phone in order to install them. Since my phone is owned by the Agency I work for if it get hosed because I screw something up guess who gets in trouble. What I am looking for is an install file similiar to what is provided by HTC when you upgrade your phone with the standard Sprint applications included. I know how to backup, install the rom from HTC and do all of that I am just very unsure about using these other custom builds where I have to do other things to the phone to be able to install to it.

So if anyone knows an upgrade to Windows 6.5 that I can just click and run that is what I am looking for. I know, search, but when you are unsure of what to search for it makes it more confusing. And the only dumb question is the one you don't ask.

thanks