can I change my UDID on my iphone

Discussion in 'iPhone Tips, Help and Troubleshooting' started by J1nx, May 30, 2009.

  1. J1nx macrumors newbie

    May 28, 2009
    Like all things regardless if its a computer or a phone, most things can be changed or re-configured...I was just wondering if I can change my UDID on my iphone. I presume pre owned cell phone shops must do this when selling pre-owned iphones, prevent clashing issues when the new owner wants to instal apps that were previously installed from the last owner of the phone
  2. Pixellated macrumors 65816

    Apr 1, 2008
    The apps go on the iTunes account, not the UDID. And a UDID is well... Unique. A bit like an IMEI number.
  3. J1nx thread starter macrumors newbie

    May 28, 2009

    Are you serious? Why have apple applied so much ball busting anti pirating and re-programing hurdles than there mac's...I know that iphone and the ipod saved there asses when it came to saving there company of over spending on an already large budget!...but for a phone?, I can normally find a way to get around most things, but not even "google" can find an answer in diving deep in re-programing or re-adjusting the iphone... especially when it comes to the UDID.. which apparently even NASA uses?????. I have never known anything like UDID that can cause so much problems. It's the first ever hurdle I know where everyone can not find a answer to...even the hackers.....scary!!!!
  4. kAoTiX macrumors 6502


    Oct 14, 2008
    Midlands, UK
    You're acting like you've been burned by Apple for not being able to change your UDID. It's not changable for a reason.

    I see it as their version of an IMEI, something that identifies a phone to them and to others. I guess there is a way to change it, but no one has found it or sees any reason to change it so no one has even attempted it.

    Good luck finding out how though.
  5. The Californian macrumors 68040

    The Californian

    Jan 17, 2009
    Surfers Paradise
    I can't even imagine one legitimate reason why you would want to change it. There is a way, and it's simplicity is what makes it so beautiful.
  6. Ivan P macrumors 68030

    Ivan P

    Jan 17, 2008
    They want to trick their iPhone into reinstalling and successfully running an app that had a trial period which has run out. This is at least their second topic on the matter.

    Seriously man, give it up. If it's a trial app like you said it is then it must have a 'full' version. Just buy that, it'd be a lot less trouble especially considering, as other people said, you cannot change the UDID.
  7. cman85 macrumors newbie

    Dec 17, 2009

    YES! you can change your udid. dont believe what they say. you need to jailbreak your ipod, get cydia, go to manage, then sources, in the top corner hit edit then add. type in

    a source should come up. click on it and go all the way down until you see udidfaker. then download that.:D
  8. lilianeloirinha macrumors newbie

    Jul 10, 2010
    Not everyone is a thief, very rude to assume that.

    I have this question as well...
    No, my phone is not jailbroken, I don't need this as I am very happy with the app selection in the Apple store and my phone is unlocked from the factory as I bought it in the UK. The reason why I would like to change my UDID for example is, that so when I sell my phone, a person who installs an app won't be able to acces my data. I mean, some applications use the UDID to provide a "logon-less" profile on their services, like the game "Farm Story". This provider happens to allow transfer of accounts between devices by letting them know the new UDID of your new device, but other services don't offer this... That means that when the new owner of my old device loads an app that I used to use, he/she might be looking at my data!
    I don't know how providers manage their apps in this case, not sure if it's linked to the Apple account (store account), but I presume it isn't because they don't ask for your account details, they automatically know your UDID when you connect to their servers, so this is the only way they can identify who is using the service and then they will show the data that was created/modified on that device with that particular UDID. This is a safety concern, a lot of people sell iPhones for many reasons, I always sell mine when I want to upgrade to a newer model, and I don't feel particularly happy to know that people will be able to access data that I've created just because the UDID will stay the same even if I erase my phone settings and do a hard reset.
  9. snedaja macrumors newbie

    Jan 11, 2011
    UDID Hack

    Yes, lilianeloirinha, I agree with you. i wonder if you have gotten follow-on info to your post. in fact, my son just yesterday naively gave out his UDID within the Storm8 game environment (iMobsters, Restaurant Story, others....) and his Storm8 account was spoofed and used within Storm8 by someone unauthorized.

    The person used a jail broken phone and a UDID spoofer app to "log in" to my son's Storm8 apps. While I personally see this as a user issue (he never should have given out his UDID, but, at age 13, was misled), I am also surprised to find that Storm8 relies on such simple "authentication" between games. May only be an issue within that gaming environment, but I am curious if (and suspect that) there are other potentially nefarious uses for a "stolen" or compromised UDID.

    I am lastly assuming that a well guarded username and password in the scenario above would have helped to further prevent the abuse. but in this case, it seems that the gaming environment does not require username or password.
  10. Stealthipad macrumors 68040


    Apr 30, 2010
    Is it possible that your iPhone is STOLEN and you are trying to hide the fact?:mad:
  11. ejking macrumors newbie

    Feb 10, 2011

    Granted, they are pretty rare, but there are legitimate reasons for spoofing the UDID. For example, I just switched to the Verizon iPhone. One of the games I play and put a few hours worth of work in progressing (HomeRun Battle 3D) logs you in to your account using only the UDID (no login user/pass as of yet). So the only way I can continue playing on the account from my old ATT iphone was to spoof its UDID and low and behold I have access now!

    Just sayin... everything has a legitimate use, even something shady like UDID spoofing

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