Don’t Install PSP 1.5.1 Firmware Update

by C.K. Sample III on 5/19/2005 · 15 comments

PSP Version 1.51 for US Users has been released; it appears to be identical to the Japanese Version 1.5.1, which means anyone looking to run an emulator or other homebrew setup on the PSP should probably hold off on the update:

One thing to note: The description of this update ""A patch has been added to address a security vulnerability in the system software" it appears this update is intended only to fix an exploit in their system that most likely will work with homebrew.So when a 1.50 version of homebrew comes out we will see thousands of posts. Does it work on v1.51?!? Like we do now with 1.0

Yeah. Now I just need to track down a version 1.0. If anybody has any leads on one send me an email. Also, and this is an aside, but I went ahead and downloaded the firmware update but didn't install it. It's 14MB in size. Why is Sony only including 32MB cards with these things when you need nearly half that space kept clean for any sort of updates. Ridiculous.

jazztr_500 5/21/2005 at 11:37 am: go to http://www.psp-hacks.com for version 1.0 psp us version
C.K. 5/21/2005 at 2:23 pm: There’s no way to downgrade. Yet.
Doc 6/9/2005 at 7:31 pm: If we could ‘downgrade’ as you put it; that would mean we could encrypt packages to v1.5+ and if we could do that, we wouldn’t need v1.0
Dieter 9/8/2005 at 5:57 pm: hallo
domp man 9/28/2005 at 7:17 pm: hey did enyone everthink to copy thier game files onto their computor, then format the memorystick? by the way, there is a 2.0 downgrader on psp-hacks.com
killa 9/13/2006 at 2:45 am: yo man i js gotta psp and im tring to find sum cool stuff for it n everything…n all i hear is downfgrade for 1.5 n stuff..WHATS soo good about 1.5???? i got 2.81….n whats the diff…?
c.k. 9/13/2006 at 8:16 am: 1.5 lets you run homebrew applications. If you just want to play games and use the device as Sony intended, then the newer Firmware is fine…
alex 2/6/2007 at 10:19 pm: i dont have a gta:lcs to downgrade to version 1.50 from 3.03
Soriku 3/11/2007 at 10:18 am: Why do you need a GTA LCS to downgrade a 3.03 to a 1.5? Is there another way?
jamal 3/17/2007 at 10:44 am: no there is no other current way to downgrade a 3.03 other then the gta trick. there are other ways to downgrade if you have 2.71 or under, but any thing above will have to be upgraded to version 3.03 and be downgraded to version 1.5.
giugiu 5/4/2007 at 2:38 pm: c’mon how i can downgrade to 1.5 from 3.03 :(??
davey 1/8/2008 at 10:30 am: i got psp 3.80 how can i downgrade to 1.50 can i just use the 1.50 download ive got or will it brick my psp????
davey 1/8/2008 at 10:31 am: help me please
psp iso games 3/23/2009 at 8:44 pm: great post, i've subscribe ur blog, i found there is a similar post here for PSP Movies, you can check it out.