Swapless PSP Exploit Released 234
YDKCooKiE writes "According to psphacker.com, an updated exploit for PSP 1.5 has been released, allowing PSP 1.5 users to play homebrew software without requiring the swap trick."
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Swapless PSP Exploit Released
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Just tried it (Score:4, Informative)
Re:Hehe... (Score:1, Informative)
This is the best thing for the homebrew scene. You can't run pirated stuff, but you can develop and run your own app on the PSP! How cool is that? I'm playing Rick Dangerous on my PSP! Woohoo!
Because the whole page is basically an ad... (Score:5, Informative)
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Just when your fingers are getting sore and your friends keep asking 'Why do you have to switch memory sticks?' Killer-X and the PSP-Dev team have answered our prayers with KXploit, a way to run homebrew on 1.5's... Minus the memory stick swap!
The predecessor of Swaploit, users will now enjoy no more jammed fingers or broken nails with the introduction of "Direct Loader", and 1.5 users can now pretend they own a 1.0.
One of our users, Gavin King (Thanks), posted a comment on how to do this in its simplest form:
"If any of this confused you.... just do the same thing you did with swaploit, but put both folders on the same memory.
Let's use your NES folder as an example.
Your MS1 folder name "NES%" and your MS2 folder leave it the same, naming it "NES".
And that's all you need to do... a simple rename and move."
(I myself tested and verified this to work.)
You can get it in our PSP Download section here.
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The file they're referring to is here:
http://files.psphacker.com/cgi-bin/cfiles.cgi?0,0
Re:Exploit? (Score:5, Informative)
From dictionary.com:
Well, installing this exploit does employ the PSP to the greatest possible advantage, IMO, so that definition of the word works fine. Of course, exploit has ta negative definition, but I see nothing negative about using your PSP to play homebrew games, Linux, and other "unsupported" stuff, so I guess the definition of exploit is relative to the speaker/listener.
Re:Sony's really missing an opportunity here (Score:2, Informative)
Technical Explanation (Score:5, Informative)
The original Japanese PSPs would run unencrypted code straight off of memory sticks. Then Sony released firmware 1.50. Firmware 1.50 required ALL code it ran to be encrypted. But there was a flaw. Some people from a group called psp-dev discovered that the PSP firmware only checked for unencrypted code ONCE, when it read the archive with the name of the application, the icon, etc. They determined that by making an archive with NO code in it, the psp would give it the OK because there was NO code in it whatsoever. Then the memory sticks would be swapped, and the PSP code loader would run the code off the second stick. But that wasn't good enough for PSP-DEV. Using a flaw in the FAT driver on PSP they were able to make this work with ONE memory stick. Why? When two folders are placed on the memory stick, one with a percent sign after it containing the archive and one without a percent sign containing the code, the PSP would allow you to select the archive, then the PSP bootstrapper would read the directory without the %, because the PSP bootstrap and FAT driver do not understand % signs.
Re:Mod Parent Up Informative! (Score:2, Informative)
gameboy tetris! (Score:3, Informative)
also, check out the kxploit homebrew pack [psphacker.com] for a one stop solution to the emulators and homebrew games available.
File mirror (Score:2, Informative)
File is berried inside the site
Mirror here : http://data.coolnicks.co.uk/kxploit_1%5B1%5D.5_psp -dev.rar [coolnicks.co.uk]
CoolNicks
Re:Lack of a network effect (Score:4, Informative)
Yes, but it's more like a "open, popular -- pick one" situation. A friend of mine is a GP32 developer. The architecture is completely open, he bought it to hack on it more than to play with it. In fact, he's now maintaining the Linux kernel port [cscience.org] for the specific ARM architecture of the GP32 port.
And yes, nobody else had a GP32 in his town when he bought it (or in his state, maybe even country(!), for that matter). But he found a very exciting user and developer community [gp32x.com] on the internet. So the installer base in [whatever specific place you are] is not that relevant.
Still, after seeing the GP32, I was almost tempted to buy one for myself (but I was broke at the time). Chances are, if you buy one, your friends might follow suit.
And emulators work like a charm, so there's no shortage of games, especially if you're into the classics.
Re:Technical Details (Score:3, Informative)
The PSP bootloader checks the folder on the memory card (FAT format) for signed code. If it finds unsigned code, it refuses to boot.
The PSP OS does not check for signed code. It assumes the bootloader has done its job. It just runs whatever code it finds.
Fortunately the PSP bootloader FAT driver and the PSP OS FAT driver don't work the same. The bootloader ignores % signs in folder names. So if you create a folder "FOO" containing NO code, as well as a folder "FOO%" containing homebrew code, then the PSP will happily boot and run your code from the "FOO%" directory. Simply place both the directories on the card and try to play the code in "FOO%".
NB: bootloader in this context isn't quite the same thing as bootloaders on PCs.
Re:Technical Explanation, no! (Score:3, Informative)
Re:Technical Details (Score:3, Informative)
The driver can't see the %, so the OS runs FOO% and the bootloader interprets that as FOO.
Re:Technical Explanation, no! (Score:2, Informative)
change your psp backgrounds (Score:2, Informative)
pspersonalize [psphacker.com] is what you need to make them work.