No. If your iOS is that high, 99.9999% percent chance your baseband has been updated and the ONLY lock for that is a hardware unlock that costs around $100. There is no hack that will unlock the higher baseband, no jailbreaking, no cyidia app, nothing, no way, zilch. $100 or nothing.
If you own the phone, Rogers should give you a code. If you bought off Kijiji or something, good luck. It's a $100.