SP flash tool not starting I'm trying to flash my Micromax Canvas A1 (AQ4501). I'm following this guide. As per the instruction, when I click on download I should connect my phone. Now, my device gets detected by Windows (see the image below). 



But the download is not starting. What am I missing here?
After some digging up I found out that I had not unlocked the OEM. 


Pressed and hold Power + Volume Up
Choosen Fastboot on the menu
On fastboot command line ran 
 unlock.bat
and then fastboot oem unlock
Selected yes on the device
Disconnected the device.
Started SP tool
Connected the device, flashing starts and completes.