Thank you for posting on the Intel® communities.
We noticed that you have contacted Intel® Customer Support directly regarding the same issue here described and also, found out that you have a thread regarding this same topic https://community.intel.com/t5/Wireless/Intel-R-Centrino-R-Advanced-N-WiMax-6250-Driver-is-missing/m.... In this case, we will proceed to close this thread to avoid duplication of effort.
Have a nice day!
Intel Customer Support Technician