Mini4 update problem

[speedlever]

I have a friend (not local to me) with an iPad mini4. She had a problem with the iOS 11 upgrade and tried to roll back to 10.3.3 using the method found here:
[Tutorial] How to Downgrade from iOS 11 to iOS 10.3.3 using iTunes

She's getting the message that factory restore failed. And also an unknown error has occurred (3503).

Unfortunately, there is no Apple store local to her. She's spent a good amount of time on the phone with support but they aren't having any luck either. Support wants her to keep trying to d/l restore image.

Any suggestions as to a course of action for her?

 

[scifan57]

Has your friend turned off Find My iPhone and turned off any anti-virus and security software on his computer before trying to downgrade?

 

[speedlever]

Yes, all off.

 

[speedlever]

How can you manually verify downloaded files in iOS? Is there an MD5 checksum app? I don't recall seeing checksum data that would support that like I have on Android.

 

[scifan57]

How can you manually verify downloaded files in iOS? Is there an MD5 checksum app? I don't recall seeing checksum data that would support that like I have on Android.

After an iOS update is downloaded it's automatically verified by Apple and will only be installed if it passes the verification stage.

 

[speedlever]

How about if you're trying to roll back to an earlier, signed version as above?

 

[J. A.]

How about if you're trying to roll back to an earlier, signed version as above?

The software version has to be signed by Apple, otherwise the installation will fail, and there are no earlier software versions available for the iPad mini 4, just 10.3.3 and 11.

During the process, iTunes connects to Apple’s servers, which make sure you’re installing the right software, in this case iOS 10.3.3 or 11. Trying to get an iOS not signed by Apple will result in error 3194 or worse.

 

[speedlever]

Yes, I am only talking about the signed 10.3.3 rollback.

 

[speedlever]

I believe the issue has resolved itself after updates from both Apple and an affected game.

 

[pugsbuni]

Does your iPad have to be a certain model to upgrade. Mine is an older one iPad 2....I'm not getting the option to upgrade

 

[twerppoet]

Does your iPad have to be a certain model to upgrade. Mine is an older one iPad 2....I'm not getting the option to upgrade

Yes. The last version that supported the iPad 2 was iOS 9.

The fist page of the iPad User Guide for iOS 11 shows the compatible modles. Hold in mind that not all models get all the new features. The older iPads can’t handle some of the drag & drop and multitask features.

 

[scifan57]

Does your iPad have to be a certain model to upgrade. Mine is an older one iPad 2....I'm not getting the option to upgrade

The iPad 2 doesn't get the update. iOS 9.3.5 is the latest version of iOS that it can be updated to.

 

[pugsbuni]

The iPad 2 doesn't get the update. iOS 9.3.5 is the latest version of iOS that it can be updated to.

Mine must be newer then. Because I'm at 10.3.3....just don't seem to have the option to go to 11

 

[scifan57]

Mine must be newer then. Because I'm at 10.3.3....just don't seem to have the option to go to 11

It could be an iPad 4 as it can't be updated past iOS 10.3.3. If it has a lighting charging port it's an iPad 4.

 

[pugsbuni]

It could be an iPad 4 as it can't be updated past iOS 10.3.3. If it has a lighting charging port it's an iPad 4.

[emoji22][emoji22] it does..