Firmware Guide
- Date: Apr 17,2008
What is this Firmware you speak of?
Firmware is what you could call the PSP’s Operating System (like Windows on a computer). The PSP’s Firmware is stored on what’s called a “Flash Disk.” Now, when Sony finds bugs, or flaws in the OS, they release new updates and upgrades to the firmware. At the time of me writing this, there are currently five different firmware versions. Version 1.0, Version 1.5, Version 1.51, Version 1.52, and Version 2.0.
So how do I know which Firmware I have?
Just goto the PSP’s main menu, then goto Settings > System Settings > System Information. Then you should see where it says: System Software Version x.xx (x.xx is your Firmware version).
Can I run homebrew on a 1.0 or 1.50 PSP?
Yes. Homebrew will run on 1.0’s with no hacks or exploits, and on 1.50 with hacks or exploits like Swaploit or KXploit.
Can I run homebrew on a 1.51, 1.52, or 2.0 PSP?
No.
Why can’t I run homebrew on 1.51, 1.52, or 2.0?
Well to explain that, I’ll explain the difference between the firmwares that stops Homebrew.
Firmware 1.0
This firmware allowed any application to run without a Geniune Sony Digital Signature. It was a very lax security firmware. Only Japanese PSPs made before March 2005 have 1.0 firmware.
Firmware 1.50
This firmware can execute applications through a hotswap technique called KXploit developed by the guys over at PSP-Dev. Read more about it below.
Firmware 1.51, 1.52 &2.0
This firmware has an authentication process, and additional security, that makes sure any process running has a Genuine Sony Digital Signature. This is what is stopping homebrewed apps from booting.
Why not just take a digital signature from [INSERT GAME HERE]?
The signatures are dynamically signed, so that means, when we run the PSP with the stolen signature, the PSP will tell thats its different and refuse to run it.
When will 1.51+ be hacked? Can I downgrade?
Downgrading firmware is not possible at this moment. And without a time machine or crystal ball there’s no way of knowing when newer firmwares will be cracked. Be patient and keep checking this site for updates. For those of you who keep asking - the current 1.0 Firmware dump CANNOT be used to flash your 1.5 into a 1.0. It is missing certain critical files which are hidden and inaccessible by current dumping software.
What firmware version of PSPs are they currently selling in stores in America?
Currently, American PSPs are still shipping with 1.52 firmware installed.
Where can i find the 1.5 JAP Firmware download?
I have recently fixed the link and it is now linked to an uploaded version on the forums by FrozenIpaq. Go here to download 1.5 JAP Firmware.
Where can I find the 2.0 JAP firmware downoad?
Please download it on Sony’s offical website.
Note: If you have any questions, please read this forum.
How can I tell what firmware the PSP is before I buy
This link brings you to the news article that tells you if the PSP is a 1.5 or higher.
