newbie question here...can i update firmware straight away from itunes after i jailbreaked my iphone 3G? and then i need to jailbreak it again?

for example, i running a jailbreak 2.0.1 software. are the jailbreak apps still function after that i update it to 2.0.2 via itunes? or i should pwn the 2.0.2 first and then using "restore" to update to make sure the apps will functioning?

thanks for help the newbie

This post has been edited by isMEheNG: Sep 5 2008, 12:34 PM