Requirements: Fastboot/ADB, Root, S-OFF ENG, NBIMG HERE, Photo Editing Software(I use photoshop)
First open up your photo software and create a new image that is 480x800.
Edit the photo to your liking and save as splash1.bmp
[File Format: Windows - 24bit]
Now that your image has been created, extract NBIMG to a new folder on your desktop and move the splash1.bmp that you just created into the folder.
Open up a CMD prompt window by Shift+Right Clicking in blank space inside the folder, then click Open Command Prompt Here.
Type in this command:
nbimg -F splash1.bmp -w 480 -h 800
Inside of the folder, it should have created a file called "splash1.bmp.nb", rename this to "splash1.img"
YOU HAVE SUCCESSFULLY CREATED YOUR SPLASH SCREEN! TIME TO FLASH IT!
Okay, so now plug your phone into your PC and enable Debugging. (If you do not know how to do this, I do not recommend going any further..)
Open CMD Prompt once again and type:
adb reboot bootloader
Once your phone reboots, it should be at the Bootloader screen with Fastboot enabled.
Copy your splash1.img into your AndroidSDK folder
Type in this command into CMD Prompt:
fastboot flash splash1 splash1.img
Now type in CMD:
I have attached 2 Splash's that I made!
TODO: Add the rest of the pictures.