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zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
What is the purpose of setting the device in DFU mode?
 

Chronus

macrumors regular
Sep 9, 2014
228
198
It’s a state you can put your iphone in for it to be ready to receive firmware form iTunes. So if your device ever froze got stuck in a boot loop or just generally messes out, a DFU restore can fix things more often than not.
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
Is it possible to see what firmware version a device is set on before making this upgrade and also see what firmware version is the latest that will be installed?
 

Chronus

macrumors regular
Sep 9, 2014
228
198
Is it possible to see what firmware version a device is set on before making this upgrade and also see what firmware version is the latest that will be installed?

iTunes would do all this for you, you wouldn’t really ever need a manual DFU restore unless your device was being crazy, iTunes will automatically update you to the latest version and tell you what you’re on already.
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
Ok. Is there any video tutorial on how to do a DFU that you would suggest i could try and not mess up my device? Something that would be explanatory reliable?
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
If i turn into DFU mode, will all of my content be wiped out? Meaning my photos, vids etc.?
 

Sunshoopa

macrumors 6502
Apr 19, 2011
325
211
If i turn into DFU mode, will all of my content be wiped out? Meaning my photos, vids etc.?
Been awhile since I’ve messed with this stuff, but not DFU (Device Firmware Update) mode itself, you can exit it. If you connect it to iTunes while it’s in DFU, iTunes will ask you if you want to restore the iDevice, which will erase everything. Which is the point of DFU mode as it’s near hardware level and not software, so if your software is really messed up, you can still recover.

May I ask why you want to do this? There’s other ways to completely erase everything. I only used DFU when I was jailbroken.
 
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zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
May I ask why you want to do this? There’s other ways to completely erase everything. I only used DFU when I was jailbroken.
Im helping out a friend that has an issue with his iPad (it reboots on its own while he is using it) and i thought it might help. But to be honest i thought that the content remains intact... hmm now this kinda changes things.
 

Applejuiced

macrumors Westmere
Apr 16, 2008
40,672
6,533
At the iPhone hacks section.
No, you need to create a backup before you restore it.
Then restore from backup.
Everything gets wiped out clean when you do a restore or dfu restore.


Im helping out a friend that has an issue with his iPad (it reboots on its own while he is using it) and i thought it might help. But to be honest i thought that the content remains intact... hmm now this kinda changes things.
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
No, you need to create a backup before you restore it.
Then restore from backup.
Everything gets wiped out clean when you do a restore or dfu restore.
Backup you mean by using the Timemachine backup?
What puzzles me is... after i do a DFU on my iPad, how do i put back the photos/content that has been wiped out?
 
Last edited:

Applejuiced

macrumors Westmere
Apr 16, 2008
40,672
6,533
At the iPhone hacks section.
No, its an itunes backup.
Plug it to itunes and backup the ipad.
Then once its done restoring again via itunes it will ask you if you want to restore from backup.
That's how you will put all your content back.


Backup you mean by using the Timemachine backup?
What puzzles me is... after i do a DFU on my iPad, how do i put back the photos/content that has been wiped out?
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
No, its an itunes backup.
Plug it to itunes and backup the ipad.
Then once its done restoring again via itunes it will ask you if you want to restore from backup.
That's how you will put all your content back.
Sorry that's what i meant, i wrote TMachine instead of iTunes.
Im doing the DFU Restore because something seems to be wrong with the iPad. Everytime it downloads a specific file it reboots, so there was some advice of doing the DFU in order to solve this issue. If i restore all the stuff back wont the problem come back again? You catch my drift?
 

Applejuiced

macrumors Westmere
Apr 16, 2008
40,672
6,533
At the iPhone hacks section.
Test it out for a few days without restoring from backup.
When its done restoring and asks you select setup as new.
Then you can isolate it better.
What specific file download causes it to reboot?
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134

eyoungren

macrumors Penryn
Aug 31, 2011
29,659
28,435
What will happen to my content though, wont i be ever able to retrieve it? (im sorry, i prolly dont understand what u say)
Here's what he's saying.

With the device functioning normally, connect it to iTunes and backup the phone.
Place the phone in DFU Mode and then when iTunes detects it, upgrade and restore as new.
Use the phone as new for a few days to see if you have any problems. If you do, it may be a hardware issue. If you don't then you can try restoring from that backup you made.
If you restore from the backup and the problem recurs then you know the issue is with whatever is in the backup.

At that point your options are to either deal with it, or reset everything up as new.
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
eyoungren: ok thanks for explaining this, but on the other hand, what will i do with my content in the case that the backup has something "bad" inside it?
 

eyoungren

macrumors Penryn
Aug 31, 2011
29,659
28,435
eyoungren: ok thanks for explaining this, but on the other hand, what will i do with my content in the case that the backup has something "bad" inside it?
That's what I meant by saying you had a choice.

You can either live with the problem or start fresh and set everything up again.
 

zoran

macrumors 601
Original poster
Jun 30, 2005
4,809
134
Is there a way i can put my content back in manually, like selecting the photos n stuff?
btw have you tried downloading that file to see if yours reboots as well? (did i mention im referring to an iPad?)
 

eyoungren

macrumors Penryn
Aug 31, 2011
29,659
28,435
Is there a way i can put my content back in manually, like selecting the photos n stuff?
btw have you tried downloading that file to see if yours reboots as well? (did i mention im referring to an iPad?)
There are third party apps available for Windows and Mac that may be able to do that, but I'm not sure which ones work. I've never used one (never needed to).

As for the file, that wasn't me asking for it so no, I haven't looked.
 

Shadowbech

macrumors G3
Oct 18, 2011
9,038
5,894
If i turn into DFU mode, will all of my content be wiped out? Meaning my photos, vids etc.?
When you do a dfu restore, it restores the device to a factory default settings. So yes all the contents will be wiped out. It is just like you are formatting a hard drive and re-installing the software. But before you do a DFU restore, make sure you back up the device. After the DFU restore, you can restore from back up and get everything back.
 

Applejuiced

macrumors Westmere
Apr 16, 2008
40,672
6,533
At the iPhone hacks section.
Hold on.
So that coconut battery software causes the iPad to reboot?
That's a mac computer only application right?
You said the iPad reboots on its own while using it.
Or it reboots when you plug the iPad to the computer and run the coconut application on the computer while the iPad is connected?
Does the iPad reboot on its own when it's not plugged in to anything?

What will happen to my content though, wont i be ever able to retrieve it? (im sorry, i prolly dont understand what u say)
[doublepost=1504881149][/doublepost]https://coconut-flavour.com/downloads/coconutBattery_3.6.3.zip
 
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