HTC splashscreen

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File Format
Name HTC splashscreen
Ontology
Extension(s) .nb, .img

A HTC splashscreen is an image used on HTC Android-based phones on startup. It is in a raster graphic format known as "NB" (apparently unrelated to the Mathematica notebook format). While a BMP-to-NB converter program exists which saves the image files in a .nb extension, the HTC actually uses them with a .img extension, contained within a ZIP file (named PH39IMG.zip) along with a android-info.txt file giving some metadata.

android-info.txt contents

This is a sample android-info-txt (downloadable here); apparently you have to duplicate this exactly for the splashscreen to work:

hbootpreupdate:13
modelid: PH3910000
cidnum: CWS__001
mainver: 3.26.502.56
hbootpreupdate:12
DelCache:1

Sample files

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