About downgrading

**TEAL DRAGON128** · May 17th, 2006, 06:09

Ive been wondering about the mph downgrader and saw how it works
(changes version # from 2.0 to 1.0 to make the psp think it needs the 1.5 upgrade)

For 2.1+ how is it impossible to change the ver. # and then use the 1.5 upgrade?

Has anyone thought of taking a EBOOT update then replacing the FLASH with files for 1.5.
then labeling it... maybe 3.0 or 5.0 or 9.99 so that it works w/ any version?

Im just curious about how this stuff works.

PS: i feel sorry for those people who are too dumb to not upgrade!

**dalejrrocks** · May 17th, 2006, 21:45

yeah, lots of people thought of this and have tried it numerous times. It doesn't work. Updates are encrypted and signed so changing them will corrupt them and there's no access to flash in 2.xx firmware, so it's not going to work. nice try tho.

**Cooe14** · May 17th, 2006, 22:35

I hope you mean to dumb to NOT upgrade. 1.5 forever!

**TEAL DRAGON128** · May 17th, 2006, 23:39

so you mean you cant make a custom 1.5 update with all the features of 2.0+

**Cooe14** · May 19th, 2006, 04:34

you could but it wouldn't let the update work, the only way you could maybe run it would be through MPH Firmware Luancher. The GameShark guys did almost exactly what you are trying to do; they added the media codecs from the higher firmwares to a 1.5 eboot and got it to run on MPH Firmware Launcher and called it "1.5 Media Edition" .

**TEAL DRAGON128** · May 21st, 2006, 07:41

whats the issues of taking nessesary files from a firmware dump (not the files that make the psp think a homebrew app is a corrupted file)
and then pasting them in the flash memory of psp.

is there a site with info on this subject?

**Cooe14** · May 21st, 2006, 07:44

how are you going to paste them onto the flash?

**TEAL DRAGON128** · May 21st, 2006, 07:52

isnt there apps at PSP-HACKS.com that let you write to the flash?

**Cooe14** · May 21st, 2006, 08:14

I highly doubt this will work even if you can write to flash (I didn't think you could just write to it). Most likely all that will happen is you will brick your psp, because with a solution this simple you would have to guess that someones already tried it.
But hey be my guest and try it and kind of wondering what will happen