Any way to unlock a MSI ProB76-P Wifi DDR4 Motherboard to be able to overclock

Found out just now a week after I Purchased the MSI ProB76-P Wifi DDR4 Motherboard, Intel i5-3600k, DDR4 32gb's of memory, Noctua NH-D155 Chromax Tower Cooler that I can't overclock. Built it, stress tested it,and transferred my Win10 digital license over. Thereafter, researched and implemented undervolting as it ran too hot. Then lastly started to try and overclock?! A whole day of bios setups as most of xtu was greyed out, research, Youtube vid's, etc. and low and behold, the great wall of MSI!! barred my way to overclocking goodness!!! Found from a search that, apparently, MSI, disabled the overclocking feature as well as fewer Pci-e lanes on the 760 Series of their boards to keep the costs down in order to sell it at a lower price!! Nothing in adverts, Product Descriptions, nor on the box and documentation stated as such. They still even have the OC section in the bios?! So calling all out there, does anybody know If it can be overridden or not? If so, please let me know, and if not, please let me know as well so I can go through the arduous process of dealing with Amazon again to return it and get one that can!! Still have 2 1/2 weeks to do so, so time is essential!! Redditeer's have never failed me before so counting on you guys for at least a "definitive" answer!! Good, or bad!! So, good luck to me. Thanks in advance, guys!! P.S. General consensus needed. Mflash my bios or not? Group 1 says yes. Group 2 and the manufacturers says no unless you have come across issues. Your opinion on this would be greatly appreciated but please don't forget what my original problem is. Debate aside, been trying to come to a decision weather or not to do so.