Thank you for your post.
In driver/software version 15.1.1 the Intel® My WiFi technology tool has been replaced by the Intel® My WiFi Dashboard.
You may just need to download the utility from: http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=21246&ProdId=3407&lang=eng
If this does not work for you or if you just prefer using the previous software you would need to uninstall the current drivers and software and load version 14.3, which uses the Intel® My WiFi Software. You can find the available download versions at the link below just make sure you select the correct Operating System: