Easy way to root your samsung galaxy series

I wanna share info how to root and un-root samsung galaxy series, this root method use if you wanna install application that need your phone being root, here we go :

1. download gb-root
2. place in your memory card, on root
3. restart your phone and go to recovery mode. on samsung galaxy do menu+power on your phone.
4. on recovery mode pick apply update from sdcard
5. wait for the process and then phone will restart
6. after restart you will phone will become rooted.
7. and if you wanna un-root (phone sell, phone go service center, etc) download this file un-root
8. do step 2-6 and your phone will become un-root again.

this method already done with my samsung galaxy GT-S5660 (galaxy gio)
there maybe another way, like use odin etc but i think this is the most simple way how to root your samsung galaxy series.