Labor : 300 Pesos Only
Or
You can do it yourself for free.
It's not actually rocket science.
The fact that you are reading this thread means that you are computer literate hence following instructions wouldn't be a problem for you.
Few individuals have been spending a lot of their time creating these hacks and giving it for
FREE
On 6.20 firmwares, you just need exploited
patapon save game and the
prometues ISO loader.
Here's a video for firmware 6.20: [Just search 'PSP ISO Loader' in youtube pinaka-unang result]
YouTube - PSP 6.20 TN-A (HEN) and Prometheus ISO loader
In the description of the video you can find the download links for the necessary files.
Here's a video for PSP and PSPGo firmware 6.31 & 6.35:
YouTube - How to Install and Run HBL+Hen+ISO Loader on 6.31 & 6.35 PSP's
In the description of the video you can find the download links for the necessary files.
Main sites:
http://pspcustomfirmware.com/
You can also google the following keywords:
PSP ISO Loader for 6.20
PSP ISO Loader for 6.31
PSP ISO Loader for 6.35
You can contact me for further assistance.
Free is Free don't sell it OK?
Hope this helps