How To Know Whether Your iPhone Has New or Old Bootroom

Jailbreaking and Unlocking with iPhone is fun, but these days apple is trying to make people life harder by introducing new changes in iPhone hardware and software which could stop or prevent people from jailbreaking their devices.


One of the change done by apple is the fix they had done in iPhone 3GS bootroom, they have fixed the potential bug found in old iPhone device which allows to unlock the iPhone to use a different carrier. There is no tool which can unlock an iPhone with new bootroom. Now the question arise here, how could one know whether his / her iPhone has a newer or old bootroom so that he /she gets to know whether their apple devices can be unlocked or not.

How To Check Bootroom Version On iPhone

To check whether your iPhone has a newer or older bootroom, boot up your iPhone and go to Settings >> About

Check your model number – if it begins with "MC" then you have the new bootroom if it is not "MC" then you have an older bootroom also check the 4th and 5th number in you serial number if it is lower then 40 then you have an old bootroom.


  1. the eraser says

    i have 3gs and its number is 87929
    and i have mc am i new or old ????????????

  2. Zeeper says

    My modellnumber starts with ‘MC’, but the 4th and 5th numbers on my serial number are 3 and 5, alas 35 and < 40… What does this mean? Do I have the old bootroom?

  3. Askar says


    I have an iphone with model number which begins with “MC” , and serial number with 4th and 5th lower than 40 (“39″). Is it an old bootroom or not?


  4. Stefan says

    I too have MC, however the 4th and 5th digits are lower that 40. is it old bootroom or not?, please clarify.


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