[color=#800080][b]For Custom System Software/Firmware[/b]
[/color]
Download this First:

PSX2PSP:
http://dl.qj.net/General-Apps/pg/12/fid/12982/catid/151

Base.pbp and keys.bin files
http://www.ipmart-forum.com/showthread.php?t=137231

After extracting PSX2PSP, put this 2 files into the PSX2PSP Files Folder.
PSX2PSP/Files/

VSO Image Resizer:
http://www.vso-software.fr/products/image_resizer/
for resizing images to fit nicely on your psp screen.

Icon Image: set it into 144x80
Background/Boot Warning Image: set it into 480x272
there is an option there in the profile tab where you can choose PSP. and un check the keep aspect ratio.

Image Converter:
Magic ISO Maker 5.4 with serial
http://www.fileden.com/files/2008/5/4/1896521/Magic%20ISO%20Maker%205.4%20with%20serial.rar

Image Mounter:
Alcohol 120 Plus Crack
http://www.fileden.com/files/2008/5/4/1896521/Alcohol%20120%20Plus%20Crack.rar

---------------------------------------------------------------------------------------------

Ok, now were all set after installing and extracting this all, get one of you favorite playstation games,
insert it on to your cd-rom..
open my computer,
right click the driver of you cd-rom.
Highlight Magic iso.
Click Make image file.
choose your output file and output format (preferred img/bin or iso)
click ok
and wait.... =)
then after that open your PSX2PSP Application

---------------------------------------------------------------------------------------------

Now into the PSX2PSP,

In the ISO/PBP file tab open and isert your converted image file;
it will automatically tell you the game title, save title , game id, sive id. etc..
choose where you want to extract the output pbp file.
get the image of the game google it in pictures or what ever,, it's up to you..
open the vso image resizer
resize your image
apply it in your icon images, background image, etc..
click the preview of what you've done, (how it will look like in your psp screen)..
then CONVERT..
wait...
wait.....
and wait.... =)

when it is done, open the root of your psp memory stick,
the open the psp folder
open games
then copy your converted psx game eboot folder
and paste it in the games folder on your memory stick
after that, open the PSPX2PSP folder
open the files folder
and copy the keys.bin
paste it inside the folder of your converted psx game eboot

---------------------------------------------------------------------------------------------

after that, exit and play the game into your psp game xmb under the memory stick..

enjoy.. =)
thanx for viewing