Thank you for replying. I couldn't find another recovery image file anywhere. Can you or anyone re-direct me to some useful link where I can download the recovery image? I have already tried twice with recovery image provided in this thread.
I used the method mentioned in this thread. How much time should it actually take to install the recovery image? I started installation one and half hour ago and it still hasn't shown any green light around the control knob and no notification on the screen to reboot.