Wanna find the version? Look on the drive sticker on top for a f/w version.
You'll need a bootable usb key or cd to flash without a floppy drive. To make this easy, I want to start by pointing you to http://www.google.com
and tell you to research Xtreme Boot Maker and iPrep.
Enjoy. The information is there. If you can't find it on your own with the information I've already provided you, you don't deserve the mods.