VY Head Unit Removal

[Sevy]

I bought my new sound system but am not going to put it all in at once because I have no idea what I am doing and I don't have money left to get it installed by a pro. Instead I just want to take it one piece at a time, starting with the head unit. I tried once and failed at removing it, I read something about putting coat hanger wires into the 4 holes of the head unit to take it out but I didn't understand properly so i'm stuck.

Someone please tell/show me in pics how to do it.

 

[caaf]

Although it's been covered I don't know how many times and with the use of a simply search tool such as Google I found this Click here and then click the first link