DFU significa Device Firmware Update (Atualização de Firmware do Dispositivo). Se uma restauração utilizando o modo de recuperação (Recovery Mode) não funcionar, você desejará usar o modo DFU como último recurso. Quando colocado o seu iphone em modo DFU, o OS não é carregado antes da tentativa de restore.
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Para que você possa colocar o iphone em modo DFU e efetuar uma restauração do firmware pelo iTunes siga esses passos:
Primeiro passo Abra o itunes e conecte o iphone ao seu Mac.
Segundo passo Pressione e segure o botão Home e o botão Sleep/Wake ao mesmo tempo.
Terceiro passo Após exatos 10 segundos, solte o botão Sleep/Wake. Continue pressionando o botão Home até que apareça uma mensagem no seu itunes indicando que foi detectado um iphone em modo de recuperação (Recovery Mode).
A tela do iphone permanecerá preta assim:
NOTA***: podem ser necessárias algumas tentativas para colocar o seu iphone em modo DFU. Geralmente, eu seguro os dois botões e então solto o botão Home logo antes de quando imagino que o logotipo da Apple irá aparecer. Se você ainda estiver apertando os dois botões e o logotipo da Apple aparecer, você os está segurando por tempo demais!
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hey I just got an iPod touch 5th generation and it was my but he's ex-girlfriends when they broke up she gave it back to him but never told her iTunes password how do I get around that and restored to factory settings any idea?
Very narrow minded to think that the phone is stolen. I am a company admin and deal with all the time when ex employees put their personal icloud account on my corporate phones.
This is also not uncommon for people buying/selling used phones. If the seller does not go through the setup and deactiavte the account, the buyer will have issues.
how can u do it if screen has passcode and is cracked/unresponsive and have no idea what the itunes account info is cause person it was bought from is looney tunes?!
This solved my "ipod touch upgrade ios 2.2.1 to 4.2 error -1" problem I have had for more than a year.
Thank You.
Remember to backup your latest state of the IPOD.
pls help me ,, my iphone need to connect in itunes and upgrade or restore it but when the restoring has 75% it stuck and there is an error(1) what shuold i do?
thank you for saving me from driving into town to the apple store with 2 little kids! I solved the problem within 10mn following the easy instructions. thank you!!
christine
For the record, my ipod touch is 5th gen, and my laptop 10.6 . And when I followed through with the instructions it worked until I got an error message of 4005, and basically my laptop's version of itunes was not up to date, although it said it was. Currently the latest version is 12.0.1. And my laptop was reading "This version of itunes (11.4) is the current version", which is incorrect and misleading. So I switched to my later model - and it works. Ensure that your stuff is up-to-date or it won;t work.