This is not my tutorial i will not post links but the maker of this tutorial is called mr.Dageron before you do this tutorial make sure you get a bmp of the texture you are replaceing such as the superman gimp suit open txd workshop and export as bmp this tutorial is for the loading screens you can change anything using this method enjoy
PS2 TXD Modding
PS2 TXD Mod
It is exclusive programm for PS2 textures editing! I found it a year ago on very old site, it is bad that I lost the author nickname. Anyway, large respect for him! There was no tutorial how to use it, here is mine (I wrote large tut for Russian GTA-Modding Wiki about PS2 SA modding).
1) Open the PS2 TXD Viewer from Steve M. , File - Open TXD, select the file you need (for example LOADSCS.TXD).
Palette Offcet: 1053080.
Image Offcet: 790856.
Also mark that picture 512 * 512 and 8bit.
2) Open the PS2 TXD Mod.
Loading the texture of a button "Open ...".
Click the button "Go to ..." or Ctrl + G.
Enter the height and width, offset images, mark the 8bpp, then OK.
3) You will see the selected image, but the palette has to be not such a need.
Therefore, you need to press the button "Get palette", or F8, and enter 1053080 - it is our Palette offset. Click OK.
Button Open BMP image loads of BMP and replace it in the texture.
Button Save BMP - stores.
That's what I got:
Re-build game iso with your new TXD through spesial programm (like Apache3. Write to DVD (if you have got console with a modchip) or run on emulator. (I advice to use emulator - maybe disc burning and running on modded console can be consided as illegal).