Epsilon BIOS Custom Flash Replacement For PSP - Page 3 - PSP3D.com - Sony PlayStation Portable News, Homebrew, Hacks, Reviews, Videos, Mods, Forums

PopcOrn DeVil · #21 (**permalink**) 06-04-2006, 07:29 AM

"A talented team have been hard at work on a custom flash replacement for the PSP, which will not only you to use homebrew files and rung unsigned code on the PSP but will also allow you to enjoy the quality features built into all Sony PSP firmware revisions, right up there to the current v2.71 firmware! The team behind the Epsilon BIOS have completed cracked the encryption methods and developed the OS hacks to run unsigned code and even in kernel mode. The team have been unable to release this previously due to the lack of a modchip for the PSP, but with the much talked about Undiluted Platinum PSP mod just around the corner, a dream can now become a viable reality! The Epsilon BIOS will be released soon."

So it's a flash replacement, not a custom firmware. Why would you need this if you already have the modchip?
Just look at what that first paragraph says, doesn't that just call out that it's fake? If they have hacked the encryptions, why would they need a modchip? It's all fake, just read the paragraph and you might actually notice!

Alexlord · #22 (**permalink**) 06-04-2006, 07:46 AM

That's I say, if they have the encryption key to sign programs, there's no need in modchip or flash replacement. That's confusing so probably fake.

charizard2006 · #23 (**permalink**) 06-04-2006, 07:48 AM

extremly gd point there popcorn.... if they had sonys encryptions there wud b no point in a flash replacement as that wud seem pointless because we wud beable to use those encryption for a d/g

Alexlord · #24 (**permalink**) 06-04-2006, 08:07 AM

If we had the encryption key, we wouldn't need a downgrader, beacause we could sign an iso loader and run it on 2.71!

the1nonly1 · #25 (**permalink**) 06-04-2006, 08:19 AM

yes this is a bit fishy as most of you have already said if they have cracked the encryption key you wouldnt need a flash replacement

piNky · #26 (**permalink**) 06-04-2006, 08:58 AM

Quote:

Originally Posted by chrispy

Aside from some minor details, you'r pretty much n the money. If this uses the modchip, it seems pointless, if it doesn't it is near-impossible. to make the FW respond before it has booted (eg respond to a keypress), you must alter the FW files in flash 0. Aside from the legality of reverse engineering software, you would then need to put the modified 2.71 back into flash 0, which is the problem in the first place!!!

Boatloader is able to respond keypress during boot.

Michael M. · #27 (**permalink**) 06-04-2006, 10:53 AM

Sorry guys, but this is impossible. The PSP has a bit of hardware-based code that decrypts the IPL (bootloader) code for execution, meaning that this code has to be encrypted in the first place. In other words, these guys would have to somehow magically encrypt their flash replacement using Sony's private key for it to work at all.

Not to mention: For it to really be able to run homebrew, they would have to rewrite every single system call in the firmware. From the functions that clear the screen to the functions that read/write files, it'd all have to be done from scratch. And trust me, that's not going to happen.

piNky · #28 (**permalink**) 06-04-2006, 10:58 AM

This is not the first mod-chip for console. If it is possible to mode PS2 or Xbox => it is possible to mode PSP.

Michael M. · #29 (**permalink**) 06-04-2006, 11:09 AM

I'm not saying a mod chip is impossible; I'm saying custom firmware is impossible. The PSP will not boot if the bootloader is signed by Sony's private key, and there's no way to get that by "cracking" encryption. It's not stored anywhere on the PSP, and brute-forcing the key would take somewhere around 10,000,000,000,000,000 years. So... It's BS, complete and utter. Closed.