Ok I'm really LOL of your posts I'm sorry but let me give you some tips and advice before you f*ck up more on your phone.
I'm really experienced with opening phones as I did it for a living at a shop in the Netherlands.
Ok You need the right tools to open the bold up.
First of you need the right Torx screw driver.
T5 is the correct one. (When you open it up lay down the phone and unscrew it)
If you buy a
T5 try it out as some of the torx are sometimes a little bigger then the other or sometimes smaller. (the torx has to fit perfectly to unscrew it)
Don't give allot of pressure when turning the screw but easily turn it (you can give it a little shock to turn it) It has to come lose very easy as long as you do it slowly.
When you put the screw back in do the same as i mentioned above, when your turning the screw
don't turn it as hard as you can because you will make the screw hole wider and the most common problem is that you make the screw head round and then you won't get the screw out anymore. When it is tight give it a little shock and then leave it.
When the screw head is round, you have a problem we all know that. How to Fix that problem without breaking it! you can do it with a little
drapper but most of the time you tighten it to hard, so it's stuk in there.
When that is the problem you can better
drill it out but you don't want to do that because it is precise work. (if you made the screw head round I think you don't want to drill the screw out because you made it round all ready and that is a sign you didn't handle the phone well when opening it)
I hope this is helpful for you guys. If you have any questions about unscrewing your phone or have a problem just ask.