adb shell mount -o remount,rw /

adb push mtd4.new /tmp

adb push flashcp /tmp

adb push screen /tmp

mount -o remount,rw /

cd /

/sbin/fota_release_space.sh


cd /tmp

chmod +x flashcp screen

./screen -dmS mtd_flash ./flashcp ./mtd4.new /dev/mtd4 -v

reboot