Decrypted updater binaries - PSP3D.com - Sony PlayStation Portable News, Homebrew, Hacks, Reviews, Videos, Mods, Forums

dosfan · #1 (**permalink**) 01-22-2006, 03:43 PM

Hi, fairly new to the forums... and PSPs in general.

Couple of questions:

1) Assuming the updater application binary is encrypted/digitally signed, is there any way to obtain a decrypted version for analysis from a 1.5 PSP?

2) Is there any documentation on the PSAR (PSP Archive?) format?. I guess it contains the firmware image to be flashed and is encrypted also.

3) Has anyone looked at the possibilty that the updater goofs when parsing/extracting the PSAR? Or is it just a straight load file and checksum it?

4) Finally, has anyone looked at a malformed (FAT) filesystem on the MS? How does the PSP handle it?

Any sensible answers would be appreciated.

Foligno · #2 (**permalink**) 01-22-2006, 04:04 PM

You sound like you have idea of what your talking about, thats very cool.

mr.psp · #3 (**permalink**) 01-22-2006, 04:08 PM

yes... and the most technically complicated question of the week award goes to...

Foligno · #4 (**permalink**) 01-22-2006, 04:10 PM

well fanjita should know what hes talking bout coz his job is all computer related...i should know because i was on a BTEC IT course...but i dont...lol

BloodForBlood · #5 (**permalink**) 01-22-2006, 04:24 PM

1) http://www.psphacks.net/forums/viewtopic.php?t=914
4) I think i read something of it somewhere.. might be ps2dev.org forums but im not sure.. :/

fil · #6 (**permalink**) 01-22-2006, 04:27 PM

yea you should talk to fanjita about this

dosfan · #7 (**permalink**) 01-22-2006, 04:33 PM

Quote:

Originally Posted by BloodForBlood

1) http://www.psphacks.net/forums/viewtopic.php?t=914

Thanks, but that is actually a firmware dump and not the updater application.

Foligno · #8 (**permalink**) 01-22-2006, 04:40 PM

if your loooking for that updater thing people are talking about then here are the two links you need:

http://psp3d.com/attachment.php?atta...7&d=1137535675 - this one is the param.sfo files for fw 1.50, 1.51, 1.52, 2.00, 2.01, 2.50, 2.50, 3.00.

http://psp3d.com/attachment.php?atta...6&d=1137533611 - this one is the actual eboot. you need to change the param to your psp fw version of course.

if thats not what you were looking for, talk to fanjita.

BloodForBlood · #9 (**permalink**) 01-22-2006, 04:45 PM

Quote:

Originally Posted by dosfan

Thanks, but that is actually a firmware dump and not the updater application.

Whoops. Sorry

I've got to sleep. :/

dosfan · #10 (**permalink**) 01-22-2006, 04:51 PM

I'm looking for a decrypted dump of the updater application (I'm guessing its the data.psp inside the updater EBOOT) any version--if possible v2.6 as that's all my PSP will execute

Sorry if this type of request is not allowed on these forums. Hopefully someone can put me straight.

Cheers guys.