Dead Lenovo A850, Not Detected When Connected To PC

I have done FORMAT + DOWNLOAD A850 ROW rom to my Lenovo A850. But sadly, it is the wrong firmware. Supposed I need to select CN rom to my phone. After flashed ROW rom, the phone is dead = not detected by PC when connected with USB cable, no boot up.

So, I googled for solution, and found out with this link.
1) http://forum.gsmhosting.com/vbb/f672/lenovo-a850-dead-boot-how-easy-jtag-1868940/index2.html
2) http://forum.gsmhosting.com/vbb/f672/lenovo-a850-dead-boot-how-easy-jtag-1868940/index2.html#post11469369

So, my solution based on those links is:-
1) Power off phone.
2) Press VOLUME UP + VOLUME DOWN while connecting USB cable to PC and phone.

Now the phone is detected by PC and I can flash another rom then.

GYM8511ML UV Sensor Connection To Arduino Nano

- This sensor is to detect 280-390nm light.
- I bought my sensor from E-Bay (http://www.ebay.com/itm/400936528899?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT), seller information "alice1101983".
- Nothing much info from seller's page. Googled and downloaded sample code from "https://learn.sparkfun.com/tutorials/ml8511-uv-sensor-hookup-guide".
- My connection shematic as below:-

- Hope this information helps.