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I pulled the boot animation file out off of the Droid 3 just to get a look at it since I was working on boot animations for the OG Droid and I was surprised to find that with the D3 it actually comes with instructions in the DESC file so here they are:

# 540 wide, 960 tall 15 frames per second
540 960 15
# p means we’re defining a part
# first number is repeat count, 0 means infinite
# second number is delay in frames before performing the next part
# so if you are playing 15 frames a second 15 would be… one second
# string defines the directory to load files from
# files will be loaded in order but names don’t matter
# s defines a sound for a part
# sounds will be loaded from /system/media
# oggs with loop points will loop automatically
# only one sound will play at a time
# timing is driven by the part, not the sounds
# if you want no sound, leave blank
# droid
p 1 7 01_droid
s Droid.ogg
# eye
p 1 0 02_eye
# eyeloop
p 0 0 03_eyeloop

Well I have been playing around a little more with the phone and since there is so much talk going on right now about the possibility of finding an exploit using the /preinstall I pulled the script for it from /system/bin/loadpreinstalls.sh

#!/system/bin/sh
export PATH=/system/bin:$PATH
PRELOAD_APP_DIR=/system/preinstall/app
PRELOAD_HASH_DIR=/system/preinstall/md5
DATA_HASH_DIR=/data/preinstall_md5
PRELOAD_DONE_PROP=sys.preinstall.done
PRELOAD_LOG_FILE=$DATA_HASH_DIR/log.txt
umask 003
mkdir $DATA_HASH_DIR
for file in `ls $PRELOAD_APP_DIR`; do
echo “$file: comparing $PRELOAD_HASH_DIR/$file.md5 and $DATA_HASH_DIR/$file.md5”
echo “$file: comparing $PRELOAD_HASH_DIR/$file.md5 and $DATA_HASH_DIR/$file.md5” >> $PRELOAD_LOG_FILE
newMD5=`cat $PRELOAD_HASH_DIR/$file.md5`
oldMD5=`cat $DATA_HASH_DIR/$file.md5`
if [ “$newMD5” != “$oldMD5” ]; then
isInstalled=`pm path $file`
if [ -n “$isInstalled” -o ! -e “$DATA_HASH_DIR/$file.md5” ]; then
pm install -r $PRELOAD_APP_DIR/$file
ret=$?
if [ $ret -ne 0 ]; then
echo “$file: install failed, error: $ret”
echo “$file: install failed, error: $ret” >> $PRELOAD_LOG_FILE
else
echo “$file: install successful, copying $file.md5 to $DATA_HASH_DIR”
echo “$file: install successful, copying $file.md5 to $DATA_HASH_DIR” >> $PRELOAD_LOG_FILE
cp $PRELOAD_HASH_DIR/$file.md5 $DATA_HASH_DIR
fi
else
echo “$file: user has uninstalled, dont reinstall. copying $file.md5 to $DATA_HASH_DIR”
echo “$file: user has uninstalled, dont reinstall. copying $file.md5 to $DATA_HASH_DIR” >> $PRELOAD_LOG_FILE
cp $PRELOAD_HASH_DIR/$file.md5 $DATA_HASH_DIR
fi
else
echo “$file: install skipped, file unchanged”
echo “$file: install skipped, file unchanged” >> $PRELOAD_LOG_FILE
fi
done
retries=10
echo “preinstall finished, setting $PRELOAD_DONE_PROP to 1”
echo “preinstall finished, setting $PRELOAD_DONE_PROP to 1” >> $PRELOAD_LOG_FILE
setprop $PRELOAD_DONE_PROP 1
readback=`getprop $PRELOAD_DONE_PROP`
while [ “$readback” != “1” -a $retries -gt 0 ]
do
echo ” property readback failed! expected 1, got $readback. retries left $retries…”
echo ” property readback failed! expected 1, got $readback. retries left $retries…” >> $PRELOAD_LOG_FILE
retries=$(($retries-1))
sleep 2
setprop $PRELOAD_DONE_PROP 1
readback=`getprop $PRELOAD_DONE_PROP`
done
echo “preinstall exiting…”
echo “preinstall exiting…” >> $PRELOAD_LOG_FILE