I can't really access a cheap 4930k from where I live unfortunately and not a lot of people are willing to buy my xeon either so I'm pretty much stuck to flashingYou could just sell the 1650 and get an i7 4930k instead. Nearly identical in specs and they sell for cheap on Ebay (last I saw about 4 months ago)
I have dual bios, should be fine. I also have an eeprom flasher if it does brickIf you take a gamble and try to modifly the BIOS there's a very good chance things can go wrong and you'll turn the motherboard into a paperweight. Why not just sell the CPU and motherboard and buy a CPU/motherboard combo that is compatable with each other.