well, im new in this and i wanted to flash my nokia 5300 using nss but i dont know how to do it. The only thing i know is how to unlock it but when i unlock it wich country name do i have to put? the cellphone is from mexico. Oh, and finally, do i have to update it? cause im having a real problem with that! my nokia is at version 4.72 and there's a 5.51 version wich i want! but the problem is that when i want to update it, it says that i already have the latest software.