Boot image for lenovo vibe P1m . It's deep sleep kernel for the stock ROM version S040 . After installing this via TWRP you will get better battery life .
1. Downland the IMG
2. Go to twrp
3. Tap "install" , then tap "install image"
4. Locate the IMG and tap on it
5. It will ask you to install in which partition
6. Select "boot" and just install
7. Reboot 😉
Additional Information:
Don't flash in another ROM or phone or you'll get a BRICK !