**Remember, in order to flash custom splash1 screens via hboot, you must have s-off via unrevoked forever.
***I take no responsibility for any damage you cause by performing any of these steps. They are for educational purposes only.
Tools You Need:
- Image Manipulation Tool (Photoshop, Gimp, MSPaint, anything that can save bmp files really.
- NBIMG command-line splash<-->image converter tool [Windows Download] or [Linux Download] (Original Dev Thread)
- Zipping tool (7zip, winzip, anything that can put files in a .zip)
- This file (android-info.txt)
- Download and extract the files linked above and place them somewhere familiar to you.
- In your image creation/manipulation tool, create a new image. Set the image size to 480x800. (If you already have an image in mind, open that and resize it)
- Create/modify/customize the image however you like.
- Save the image as splash1.bmp file. Ensure that you are saving the file as a 24bit RGB color bitmap. To make things easy, save the image in the same folder where you extracted the nbimg tool.
- Open a command or terminal window and CD to your nbimg folder.
- Type in the following command: nbimg -F splash1.bmp -w 480 -h 800
- If successful, nbimg should have created an nb file called 'splash1.bmp.nb'.
- Rename 'splash1.bmp.nb' to 'splash1.img'.
- Take your newly created splash1.img file and the 'android-info.txt' that you downloaded earlier, and place it in a new ZIP file called 'PB31IMG.zip'.
- Place your newly created PB31IMG.zip on the root of your SD card, and reboot to hboot. (adb reboot oem-42)
- If everything went smoothly, you should be prompted to install your custom splash1.
PS: Here is the STOCK splash1, if you feel the need to revert back.