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PSP Downgrading StoryIt depends on what version your PSP Firmware is. Most PSP firmwares can be downgraded as of now. I have a guide to downgrade 3.03 or 2.80 on my website, at: http://avenger.hacker.googlepages.com/

3.03 and 3.40 can be downgraded, but you require a UMD Game. GTA:LBS Unpatched for 3.03. And Lumines for 3.40. (for more information on 3.40 downgrading, have a look at this site: http://pspupdates.qj.net/

Downgrading 2.80 requires no games at all.

---Downgrading Tip--

If you have a lower firmware than 2.80, just upgrade to 2.80 using Sony's official upgraders, then downgrade. If your firmware is in between 2.80 and 3.03, upgrade to 3.03, then downgrade. Same with 3.40.

Now you ask "Why do you need a specific game to downgrade 3.03 and 3.40?"

Because developers find exploits and holes in the games and firmwares which lead to a downgrader being released. Sony patch up as many holes as they can in games and firmwares so they can prevent downgraders (homebrew games and applications they don't care about, it's just that downgrading leads to piracy of their games).

If you have no idea what I'm talking about, or just don't understand it, not a problem. This guy on eBay sells a service to downgrade/unbrick psp's for you at a small fee. http://cgi.eBay.com.au/ws/eBayISAPI.dll?ViewItem&rd=1&item=130152935555&ssPageName=STRK:MESE:IT&ih=003

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Q: How do you install downgrader for psp?
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