Firmware 2.0/2.01 Easy Downgrader

[psphome]

Wow, less than a week ago we saw the first "Hello World" application emerge on all 2.0+ PSP's with the newly discovered and exploited libtiff vulnerability. In the past week we have seen both a 2.71 downgrader, 2.80/2.81 decrypter, and a new eLoader (v0.9.8), all of which happened within days of each other!

Today, the Noobz team have released a 2.0/2.01 downgrader that utilizes the new tiff exploit which allows them the necessary access to complete such a task. Even though 2.01 was released roughly a year ago, I'm sure there are still those who may benefit out of this knowing that this is a safe downgrader and hasn't been reporting any bricks so far.

As always, downgrading always has a risk of bricking your PSP if you fail to follow the directions properly, so please use this downgrader at your own risk. So, for those who didn't update to 2.71 to downgrade, you can successfully downgrade by following these steps as listed in the readme file -

1. First you need eLoader 0.98 or later (get it from www.noobz.eu).

2. Install eLoader, and make sure that it is working for you by loading some nice safe homebrew (e.g. Squarez).

3. Next unzip this downgrader package onto your memory stick. You should end up with the EBOOT.PBP file copied to /psp/game/201downgrader/EBOOT.PBP.

4. Also copy the v1.5 Update EBOOT to /psp/game/update/EBOOT.PBP.
5. Now run the downgrader via eLoader. Assuming that your PSP passes the safety checks, you should be given a menu of options.

6. To downgrade, you need to select the 'set to v1.00' option (the Circle button).

7. This will fake your PSP to version 1.00. Once you've completed the process, you can run the v1.5 Update EBOOT, directly from your PSP's Game menu.

8. Note that when the v1.5 Update is 99% complete, it will display an error message that it has 'failed - contact Sony customer support, error code FFFFFFFFF'.

9. This is OK! Just power off your PSP, and reboot it. You then get a blue screen, saying "Press O to reset your settings" in several languages. Press O, and your PSP reboots again - voila! You now have a v1.5 PSP.

10. Note that, before you install the 1.5 Update, your PSP is still really a v2.0 or v2.01 PSP, but it will claim to be v1.0. If you've changed your mind about downgrading, you can choose to rerun the downgrader, and restore your old version number, with either the Cross or Square button, as appropriate.

11. Alternatively, if you changed your mind about running the downgrader, you can just press Triangle to exit without changing anything.

[madness]

um ok whick one is to better to have if i wanna change my back ground on my psp? firm ware for easy downgrader? i have had my psp for almost a year now so dont know what it has on it? talking to a noob here so any upgrade info on it would be great thanks everyone.

[Steph]

What version do you have? If it's 2.0 and above you can change your wallpaper in the theme settings, which is under settings. So you don't need to downgrade.

There isn't a setting for it if your PSP's below 2.0 though, but there are hacks that will allow you to change it. But these hacks make the background you choose permanent, so i'd choose a really good one if you really want to change it.

[ScouseSoldier1980]

The more i hear about homebrew games the more curious i get and i am really starting to wonder whether i should try, the problem being i have recently installed V2.81 firmware and havent seen anything about a downgrader for this yet. Please help.

[Steph]

The only thing you can do is wait for someone to make a downgrader for 2.81.

Being able to play roms and homebrew on your PSP is cool for a while, but the novelty does wear off. If there's loads of games you played on other consoles that you really want to play on your PSP, then wait for the downgrader, otherwise you're not really missing out so don't worry too much.