How to Check iPhone New Bootrom or Old Bootrom

FOR WINDOWS

there are 2 method:

  1. method 1:
    serial number iphone as an example SN: xx940xxxxx
    * Note that is the digit to 3, 4, and 5. The third digit indicates the year of manufacture 9 for 2009, 0 to 2010 and then digits 4 and 5 for the week-making
    * That needs to be ascertained to ensure old bootrom is 3.4 digits, and 5 should not be > 940 and or the third digit is not equal to 0
  2. Method 2
    uses software iDetector Software
    use:

    1. make sure it is installed itunes
    2. connect iphone to computer
    3. Place your iPhone in DFU
    4. Run iDetector
    5. Click the button “Is my Bootrom Old or New?”