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Hi Guys, i unable to update my 12 pro max via itunes. During flashing the IOS 14.3, message error was popup "Could not be updated. An unknown error occurred(4000)''. 2 times and same error message was popup on my pc windows.. Hope can explain to me and i new apple user...Thanks
iPhone 12 Pro Max, iOS 14
Hi TT2, issue was solved after tried to waiting for couple of hour and re download the IOS and updated via phone. Its maybe bcs the passcode on my phone. Apple also should be resolve this. Thanks for support.
AA
Hi TT2, issue was solved after tried to waiting for couple of hour and re download the IOS and updated via phone. Its maybe bcs the passcode on my phone. Apple also should be resolve this. Thanks for support.
AA
Some suggestions here: https://appuals.com/how-to-fix-update-error-4000-on-iphone/ of which this one is probably relevant:
I've seen other users posting that they needed to remove their device password. It may help to simply keep your device awake and unlocked during download and the start of the installation. Perhaps set a longer auto-lock timer.
tt2
See If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support. If you're trying to update using iTunes try over the air instead, or vice versa.
tt2
Hi turing. same when update via phone. Have error message was popup on my phone as well.
You're welcome. 🙂
tt2
Can't update IOS via itunes
