yeah pr 1.1 came out like 2 weeks ago in the uk, so india maybe even later, u'll just be getting 1.1 in some places when others get 1.2. the connect to computer instead of updating over the air is usually caused by a lack of space in rootfs, check some of the threads on here for ways to free rootfs and u should be able to get 1.1 over the air, it doesn't seem to work via usb anyway! oh and defo reflash the kernel first if you've overclocked.