Upgrader 2.0

Where can I find an upgrader to 2.0 ? I have a PSP that has firmware version 1.52 and want to upgrade to 2.0. Also if I download emulators that work on version 2.0 are they backwords compatible ( will they work on my 1.52) ?

I'm having the same problem! I can't find the 2.0 eboot! The download off of pspupdates isn't working:( someone plesae help

i believe psp-hacks.com has the 2.0 upgrade.

I just went there and downloaded it. I tried tons of different things with it but its not complete. It goes to the 2.0 upgrade screen, but there is no text! just X and O and when you pres either of them it goes to a grey screen. wtf....

f**k guys! I just tried more and more. Even the japanese one. They ALL are missing their text and I can't do anything!

HelP! Could this be a glitch people should know about?

Hey it worked for me I upgraded to 2.0 then downgraded to 1.5 and Im Playin homebrew. I got the 2.o firmware from psp-hacks http://www.psp-hacks.com/file/5 It worked fine.