PSP 3000 - 5.51 to 5.03 downgrade

[satoru2984]

tlsolrac found a way to downgrade 5.51 to 5.03. He says he used hex editor. He says he tricked his psp by replacing 5.03 to 5.03.

He says "When you get a error, checksum of OFW". I don't get what he means by "CHecksum". What do you have to do?:p

[satoru2984]

Here's a link

http://www.dcemu.co.uk/vbulletin/showthread.php?t=232182

[Nocuddle]

u r an i d i o t

[Van Helllsing]

You do realize that by doing such methods of hacking WITHOUT the pandora battery, you are risking your PSP's life? That's why i recomend using the battery and the memory stick.

[Rusty Tolentino]

Hi Everyone!
Today is my first day here @ DCEMU uk..I am not so familiar with psp so I'm glad that i found this site..
Good luck everyone!
Rusty

[PSPdemon]

The checksum part means that when you change the variable ( say 5.03 to anything.... ) that hashed value changes the checksum key. So when its checked during launch it wont match up thus it'll throw a error.

Regardless if it was that easy don't you think others would have done that by now?

[dumlao1975]

hi to every one could you help me how to unbrick psp3000 v3.75

[jxx2005]

i thought the 3000 was pandora resistant or immune?