My friend has a mac which has some malware on it, we want to wipe the whole disk and create a fresh install. However the firmware password is set and she has no idea what it is. The apple store refused to reset it since she didn't have a receipt or other proof of purchase (it was purchased in 2013).
So there is 1 option left here to clean up the mac which I want to try, but I'm not sure if it is a good idea. Her icloud account is logged in, so with the find my mac site I can do a "remote wipe" of the machine. My question is: After a remote wipe, what exactly will happen when we boot the machine? Will we be prompted to go to recovery mode (which will fail since the firmware password is unknown), or will we be able to just log in with her icloud password and have a clean install of OS X?
My main concern is not bricking her computer, and no sites I've checked so far make clear what happens when a remote wipe is done on a computer with an unknown firmware password.