In order to futureproof your iPhone upgrade, you need to get and save your ECID, iBEC and IBSS. In order to do this you need the following program: difrnt » Blog Archive » ECID Grabber & iBEC and iBSS Grabber. You can then follow these instructions from step 6 on – the grabber will do Read more about iPhone 3GS Jailbreak, ECID Grabber & iBEC and iBSS Grabber[…]

OK so maybe it’s not quite as accurate as a proper sonic ruler, but being able to use sonar on your iphone is a pretty neat trick! Found Footage: The iPhone sonic ruler.