Resetting Galaxy S 3 to factory default ICS I am a new Android user, and recently I have upgraded the default ROM of Samsung Galaxy S 3 to Jelly Bean MIUI ROM using the steps mentioned at the International Business Times.

Now I want to revert it back to default ROM but I am unable to do so.

Although the blog says 


  If you want to return to your previous ROM for some reason, boot into
  recovery (using the procedure explained in step 3), choose backup and
  restore, then restore your previous ROM by selecting it from the list.


But I didn't find anything within the list.

I tried wipe data / factory reset but still not getting the default ROM.

What do I need to do to get back the default firmware?
I found a workaround, Downloaded a firmware from http://www.sammobile.com/firmware/ and updated my galaxy s3 with that using odin. Upon first reboot my phone hangs showing only boot screen with samsung logo for about 2 hours, then I restarted phone in clockworkmod recovery did a wipe data / factory reset and then restarted the phone again, I got the default firmware back. Then connected the phone to pc using kies and upgraded the firmware.