How to flash htc one x plus.

My phone is not restarting,i have tried almost every option in the boot manager.
my phone is unlocked and s-off ,i have got my phone from ebay,seller told me that phone is from korea.
please tell me easy and complete procedure to flash my phone,
tell me how to choose the right ruu file,:confused:
which are the drivers need to be installed on my pc for flashing the device.
all the drivers of my device are not installing on my pc:(
youtube video will be appreciated:o

please help me guyzs if you know the solution.
THANK YOU:good: