What you'll need:

Devhook 0.45 ,a working firmware dump 2.71
A custom firmware - Either Dark_Alex or harleyg's mods
X-Flash V12.

What you can customise:

Debranded Intro Screen (Remove "Sony Computer Entertainment" from Boot or Change cold-boot sound)
Disable "Network Update" icon (still says "Network Update" but clicking does nothing)
Disable Wavy Background effect in XMB
Change Gameboot Video (Use ANY .pmf video under 1.5mb)
Change Wallpapers (Although you can do it normally as well)
Change XMB Font
Remember that mixing and matching files between firmwares can be buggy. Although it wouldn't result in a brick if you're just working with Devhook, it can make emulation much less enjoyable. So please remember to store a backup of your working dump somewhere safe, so that even if the modifications don't work, you can easily revert back to your tried and tested working dump.

Once you've backed up your dump, you're ready to begin modding your Devhook firmware. As always, you do have a few choices.

Dumping your original 1.5 Firmware in X-Flash, entering Simulation mode in X-Flash and modifying the dump there. (Recommended)
Modding your original firmware using X-Flash, dumping it, and using the modified files under Devhook with your dump.
If all this doesn't make sense to you, don't go ahead with the whole thing. There is a risk of bricking while using X-Flash; not because of application, but because of a mistake on your part.

If you're still adamant on doing this, I'll list out the steps:

Method 1: no risk of bricking

Dump a clean 1.5 Firmware from your PSP using X-Flash.
Enter Simulation mode in X-Flash. Now, whatever you do, you're doing it to the dumped firmware.
Make the required changes. I've listed the ones which are reported to work above.
Exit X-Flash
Copy the modified files using Windows, to the correct destinations given below.
Start Devhook, and test the mod.

Destinations of different files: (### equals to the firmware/folder which you're using in Devhook; in our case, 2.71)

All .rco, .pmf and .bmp files - Copy from /dump/flash0/vsh/resource/ to /###/flash0/vsh/resource/
All .prx files - Copy from /dump/flash0/vsh/module/ to /###/flash0/vsh/module/
All .pgf files (Fonts) - Copy from /dump/flash0/font/ to /###/flash0/font/
Doubleposted Message Below:
when someone as done this please upload the file for the forum to share , im til working on it, so when i get it done ill upload it

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