Russian Rulet? PSP style

Alright now my first post will be concerning the "downgrade" how can one be sure as to wether or not he/she is indeed downloading a safe non-tanted 2.00 to 1.5 downgrader how would this be known. using anti-virus software?(trend micro PCillian) or by other means and I trust that I will get the truth and not some...let me call them a..."Bricker" or "Mason" attempting to royally screw me out of 250 bucks I hate you SOBs...so can anyone turn me to a non-tanted downgrader and can I trust this wonderful site?

www.pspupdates.com and for sure www.psp-hacks.com look for the MPHdowngrader NO OTHERS

But see, the thing is they might just edit the file and put that file to "brick" your PlayStation Portable. But if you have the very first file like myself, then yes, that would be a safer way. But you can take those link that nemesis91101 gave ya and go for it.

but how can i be sure that they dont have the brick whatnotness?

Well, if you really want to downgrade and is afraid to download from elsewhere, I have the first files, if you want, I'll PM them to you.

alright thanks