Much to the dismay of Sony, it appears that the homebrew community has finally created a downgrader for firmware 3.50. With almost any copy of Lumines, PSP owners will be able to have their systems revert back to an older firmware. Visit N00bz for the complete directions, but make note of one of the requirements: "Sufficient intelligence and English language skills to be able to carefully and throroughly read the instructions."

Downgrading a system CAN BE RISKY, and MAY CAUSE YOUR SYSTEM TO BE INOPERABLE (or "bricked"). Also, you will be voiding your system's warranty by using this hack. If you're willing to take the plunge, feel free. Once you get to 1.50, we highly recommend that you install one of Dark_Alex's custom firmware packages, to ensure compatibility with current game titles.

[Thanks, ben!]

Finally, you can downgrade your 3.03 PSP to homebrew-friendly 1.50. You will need the following:

• Unpatched GTA: Liberty City Stories
• 1.50 firmware
• 3.03 firmware
• 3.03 downgrader

You can find more info at Noobz. Remember: you are downgrading at your own risk, and no one can be held responsible if you brick your system. Take precaution. Once you downgrade, you can always upgrade to one of Dark_Alex's custom firmware options.

[Thanks, Ben!]

[Update 1: Check out this incredible guide at the PlayStation forums to help you every step of the way.]

A public message announcement from the PSP Fanboy team: Stop asking if you can downgrade your system. Currently, downgraders only work for PSPs with firmware 2.80 or below. Constantly leaving comments about downgrading from 3.03 will not get responses.

So, what are you supposed to do then? N00bz, "homebrew without a clue," answers some of your burning questions. They note a few key points: there is a "kernel mode exploit" in all PSPs, up to version 3.03, that seems to be unchanged. Once a "user-mode exploit" can be found, it will be theoretically possible to run homebrew on all PSPs--even downgraders should work.

But when will this happen? Who knows. Certainly, there are hard-working homebrew coders trying to find exploits in all of Sony's latest. However, N00bz recommends that if you're ever serious about switching over to homebrew, you should stop upgrading your PSP altogether. 3.04 or whatever future firmware upgrade Sony releases will most likely address these exploits; and it should be much easier to run exploits on 2.81 versus 3.03. There's no guide as to when the homebrew community will release something, but we advise you: please be patient. Personally, I'll keep upgrading to Sony's official firmware because I actually like playing legal games.

[Update 1: Looks like I offended a few of you with my overly bitter comment. I'd like to apologize to those of you that do actually use your homebrew PSPs in a legit manner. As an acknowledgement of the harsh tone I took, I will not delete the comment. Sorry to those that were offended: you are clearly upstanding in an industry where many people take game developers for granted.]

Some people are wary that the use of downgraders will leave their systems essentially useless, or "bricked" as they say. The process isn't the simplest to follow, and copying over system files is always a dangerous thing. However, the homebrew team at N00bz have created the "safest" downgrader yet. It has built-in security checks, support for TA-082 and TA-086 motherboards, and includes most every file you'll need to revert your 2.80 PSP down to PSP 1.50.

This doesn't mean that it's 100% fool-proof, as the warning attached to the downgrader states. However, there's also a new alternative: by downloading and installing HEN-D to a PSP version 2.80, you'll be able to launch a good deal of homebrew without having to downgrade at all.

[Thanks, Rajat Jain!]

Homebrew enthusiasts know that there's a special kind of PSP that can't downgrade... until now. Some PSPs have a TA-082 motherboard which prevents downgrading to a homebrew-capable firmware, but whiz-kid Dark_Alex seems to have worked his programming magic yet again and has created a downgrader for y'all running firmware 2.71. Considering the technical proficiency this guy is capable of, shouldn't he be hired by Sony by now?

[Thanks, ldd. Via MaxConsole]

See also:
Fake downgrader angers homebrew community

There's always someone out there that updated their PSP, only to regret it moments later. Well, for those of you that have been patient enough not to upgrade past 2.80, an "easy" way of downgrading to homebrew-compatible 1.50 has been released. This guide from PSP Vault will help you every step of the way, but they warn:

-If you have a TA-082 motherboard in your PSP, no [sic] not even attempt to downgrade.
-If you are clueless and don't feel that you can follow this guide step-by-step, do not attempt to downgrade.
-If you have a fear of bricking your PSP and are nervous, I will say this guide has been used several times over, but perhaps you should wait for some sort of "safe downgrader".

If the scary red text doesn't change your mind about downgrading, then you're ready to go! First, you'll have to download eLoader and xLoader, PatchSFO and finally the downgrader program. Make sure you have a USB cable ready to connect your PSP to your PC. You'll run the downgrader, but watch out for the next few steps, indicated in the guide. You don't want to brick your system, do you? With 3.02 firmware emulation entirely possible, it appears that a whole new slew of people can now be introduced to homebrew.

[Thanks, Joel!]

Some modern PSPs are manufactured with hardware that prevented downgrading to older firmware. They can be identified by opening the UMD drive and looking inside: if numbers appear inside (pictured right), then the system was unable to downgrade... that is, until now. Programmer 0okm has developed SoftDown" for TA-082 users, and is willing to work with you one-on-one via e-mail to get your system downgraded. Of course, like he says, you'll have to trust him with your e-mail address, PSP serial number and your firmware data. If you're ready to start taking the first steps towards a very homebrew-friendly system, check out 0okm's website for more info.

[Via PSP Hacks]