1. kcirrab's Avatar
    well according to my Model number: MC640LL : (MC) I would say New boot rom...


    According to my Serial Number: 86034****** : (4th and 5th digit are less than 40...) I would say Old boot rom...

    What gives?

    Any ideas?
    2012-03-09 05:58 AM
  2. 2k1's Avatar
    Download IDetector and follow instructions.
    2012-03-09 12:15 PM
  3. Susty's Avatar
    New bootrom, old baseband chip... Two different things...

    So basically when it comes to jail breaking you'll have to wait till the tethered becomes untethered (difference between new & old bootrom).

    Going by the serial, you have a 3GS with an Infineon chip & not the Toshiba chip (baseband unlocking).
    2012-03-10 03:19 AM
  4. kcirrab's Avatar
    So which is better the infine chip or the toshiba chip? I rely on an unlock
    2012-03-12 06:50 AM
  5. Susty's Avatar
    You've an old baseband chip so your ok for unlocking.
    2012-03-12 09:45 AM