Coding by kando (based on some code from Art and LordSturm)
-Based on the modification discovered by birdman.
Readme by kando
--What does this program do?
Your firmware is programmed to load your gameboot.pmf upon a game startup from directory:
"flash0:/vsh/resource/gameboot.pmf"
Which means whenever you want to change this, you must flash your psp, and you take up valuable flash0 space.
The firmware can be edited, however, to load the gameboot from your MEMORY STICK instead of flash0!
why is this good?
-You can easily swap gameboots through a memory card reader/usb or irshell, no flashing needed!
-Reduces the risk of bricking via flashing gameboots!
-Provides a much larger space to put gameboots, so they are not limited to flash0's small space!
-Save extra flash0 room by deleting flash0's gameboot! So in the future when i release my CIntro mod...
How is it done?
-In the opening_plugin.prx, there is a single line that tells the firmware where to load the gameboot.pmf. Simply put, properly changing this line to some other area will work as easily as it sounds! HOWEVER hex'ing this file by hand has alot of risks, as the parts of the original path that arent being used all need to be hex'ed to 0x00 or it will result in an error.
This program does all the hex work for you, as well as the flashing. AND it backs up all the originals for restoration!
Unfortunatly, you cannot edit the opening_plugin.prx that is already in the firmware as it is ENCRYPTED, so a DECRYPTED opening_plugin.prx will have to be used, however, it works just the same as the encrypted one.
--SO....how do i run this program?
1) You need to have a DECRYPTED opening_plugin.prx inside MSROOT ( ms0:/ ), so it will look like:
ms0:/opening_plugin.prx
You must decrypt opening_plugin.prx yourself on your own hardware, download the Sony update eboot.pbp, use pspbrew to get the data.psar, put it in the root of your memory stick, and run PSAR Dumper. Make sure to read the onsceen instuctions, PRESS SQUARE to DECRYPT all files. When its done, go to ms0:/f0/vsh/nodule/ to grab the opening_plugin.prx and put it in ms0:/
2) Extract GBmod and put it in whatever game folder is your 1.50 kernel (/PSP/GAME/ or /PSP/GAME150/
3) Run the program through the "games" menu of your PSP.
The program will backup your original opening_plugin.prx to ms0:/psp/opening_plugin.original
It will also backup your gameboot.pmf to ms0:/psp/gameboot.original and if there is no ms0:/gameboot.pmf, it will copy itself there as well.
If you have already installed and there are backups present, the program will restore them, and put the "edited" opening_plugin.prx back to ms0:/ to be ran again if wanted.
4) Find your favorite gameboot and put it at ms0:/gameboot.pmf and run any game/homebrew!
--but what if i dont have my memory card in? or what if i dont have a ms0:/gameboot.pmf?
Or you can get Flash Agent F5, install as normal homebrew, run it and go to 'firmware hacks' and select 'redirect gameboot.pmf to ms0.....'
You can debrand [remove the PSP logo] gameboot with the option above.
I have a problem, when got the gameboot.pmf and put it into resource file. flash0:\vsh\resource. When I open GBMod, I press "cross" then it says "Sorry, you got the wrong files there, exiting" Can you tell me why?
@ali...try the tutorial i posted on here for this, has pictures and noob proof to follow. Although this one is pretty straight forward as well. "want to put a custom gameboot on your psp" click that one.
