I'm having some trouble getting an Optiboot board profile to show up as an option to burn as a bootloader. I've downloaded the Optiboot zip file, but no matter where I put the content, I can't get Optiboot profiles to show up in the 'Tools' --> 'Board' menu. I do have a SparkFun ISP Programmer that I can use, but I'm not sure what the process would be to use it.
Any help that could be offered would be appreciated.