Update: SKFU has now posted the following update: Ok guys, as Mathieulh is a lot more familiar with PSP related stories, thanks to him I can tell you now that my little idea won't work.
The reason is, that the Datel technique requires the application to run as UPDATE. The PSP runs the program in update mode which the PS3 won't be able to emulate at all. So sorry, no PSP homebrew on PS3, at least not via this way.
Today SKFU (linked above) shared a video of Datel's Action Replay running on official PSP Firmware 6.20, which leaves speculation as to whether the cracked PSP encryption process could lead to PSP homebrew on Sony's PS3 console.
Based on SKFU's idea below, we'll stick this in the PS3 Hacks section where PS3 hacks, exploits, mods, projects and ideas are discussed.
To quote: Datel may had success in cracking the PSP's encryption process and sign EBOOT's to run their http://www.maximummemory.com/ar_psp/pc_installer/PSPAR_Demo_Setup.exe on official firmwares, including the newest and the PSP Go hardware.
Why do I post it as I only focus on PS3 you may wonder, but hey the PS3 just got it's PSP emulator to be able to run the PSP Minis.
I didn't do any research on that yet, but well I guess it's the same as with the normal PSP games you could play on the PS3. The package file is extracted to PS3 HDD and runs the unpacked PKG files including the PSP EBOOT.BIN.
So may this be an idea to run PSP homebrew software on the PlayStation 3? Possible. May Datel have thought bout this? No clue, but I'd like that to be tested. Replace the PSP EBOOT.BIN on PS3 HDD and start your selfsigned application.
Finally, from the video's caption: If you don't understand the point of this video: Action Replay is not supported by Sony, which makes this impressive.
It seems Datel has found a way to encrypt unofficial software, making them the only ones able to run whatever they want on all models of PSPs (including the PSPGo)... besides Sony of course.
The Demo of the Action replay software can be found on Codejunkies' Web site if you want to see by yourself.
Regarding the stupid piece of paper on my screen: just worried about the "PSP ID" thingy, sounds much more dangerous than a MAC address to me.
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