Zenfone 4: Fix OTG after 4.3.6 Update

1. Download Zenfone 4 Platform-Tools: 4Shared
2. Enable USB Debugging in Developer options.How? enable developer options and check usb debugging (Tutorial)
3. Turn Off HH.
4. Press and hold power button + volume up + volume down until android green robot.
5. Connect the USB cable from the PC to Zenfone.
6. Extract Platform-Tools.zip , then enter in the Platform-Tools folder  (there his boot.img).
7. Still in the Platform-Tools folder, open the Command Prompt (Hold Shift Keyboard + Right Click Mouse).
8. Type: fastboot flash boot boot.img and press ENTER
9. Reboot HH.
10. Do it with your own risk (DWYOR) 
11. Wifi Won't turn on Fix Tutorial HERE <-need rooted device

Original Post and Credit to  https://www.facebook.com/ricky.tnt