i had it just laying around like a paperweight. i bought another at 1.1.1. which i haven't upgraded because the only real feature i care about waiting for is using email and text in landscape. so....i will now have my old iphone working and it still uses my original supersim (i went with the isim unlock for my newer iphone)

can i go immediately to a new software or should i just leave it where it is? is there a tutorial somewhere like hack that iphone or here that i can use?