Wanbo T2 apply custom settings on boot

wanbo.sh

# Connect to device using adb 
adb connect <@IP>

# Start su shell (works out of the box - no need to root device)
adb shell
su

# We need to remount the system file-system in order to modify the start-up script
mount -o remount,rw /system

# Backup the original script
cp /system/bin/init_preinstallapk.sh /system/bin/init_preinstallapk.sh.bak

# Use any of the 'echo' lines below to modify the start-up script for your needs

# This line will set background process limit to 1
echo "service call activity 51 i32 1" >> /system/bin/init_preinstallapk.sh

# This line will make device switch to HDMI after boot
echo "/system/bin/monkey -p com.mstar.tv.tvplayer.ui 1" >> /system/bin/init_preinstallapk.sh

# This line will make device run at 720p
echo "wm size 1280x720" >> /system/bin/init_preinstallapk.sh

# Reboot device
reboot

Source for background process limit: flode/SetAndroidProcessLimit#5

Thanks! the projector is working better after changing the background process limit.
I came here because of the HDMI switch on boot, and the performance is really better now!