Ravine has released a mod of the Flashmod in our forum, which was originally by Orbis PSP Development. He has added a font installer function in this version to prevent having to place the customized font on your memory stick, which means, this function will write the font files into your firmware. Ravine has tested this with the TeamOverload's customized italic font and it worked fine. He even included an option for you to set everything back to default. He also fixed a bug when you select UMD or XMB, it would automatically load the first option. Now you can actually use the 2.0 game loader and overclocking options. Here are some details of this release:

This version of Flashmod has an update that allows you to install your custom fonts directly to flash0:/font.

To use this, please follow the instructions:
1. Create a folder named fontmod in your ms0:/ (psp's main directory).
2. Add your .pgf font files. Make sure you have all 20, file names are listed below:
gb3s1518.bwfon
jpn0.pgf
kr0.pgf
ltn0.pgf
ltn1.pgf
ltn2.pgf
ltn3.pgf
ltn4.pgf
ltn5.pgf
ltn6.pgf
ltn7.pgf
ltn8.pgf
ltn9.pgf
ltn10.pgf
ltn11.pgf
ltn12.pgf
ltn13.pgf
ltn14.pgf
ltn15.pgf
shadow.pgf
3.Make sure you have not changed your system.dreg(If you don't know what this is, then don't worry about it.) file. If you have change the font location back to flash0:/font.
4. Run flashmod and choose install custom fonts from the XMB menu.
5. Enjoy your new fonts!

Also fixed:
When choosing UMD or XMB menu, does not automatically select the first choice.