Cannot reset iphone and advised to wait for 8 hours every time the phone is switched on

Lawrence Finch wrote:

Aardvaak wrote:

Indeed, as I said above: the wrong passcode was entered many times by my mother.

I'm trying, unsuccessfully, to wipe her phone.

The Mac is a 2020 model - I think. However, the PC is running the latest version of Itunes - which cannot see the phone - and Apple Devices which does see the phone and attempts to restore it the most recent ios but fails to do so. The phone has been stuck with the Apple symbol and the progress bar at ~ 60% for about an hour. And I cannot shut down the phone.

If the Mac is 2020 then it can be updated at least to Sequoia, which can then be used to restore the iPhone using Finder:Restore your iPhone, iPad, or iPod to factory settings using a computer - Apple Support

Sorry, miss-remembered the date: it's a 2011 iMac.

Notwithstanding that, this is the state that the phone reached after Apple Devices attempted to restore it:

[Edited by Moderator]

I will try that but first can you explain why the phone instructs me that it is unavailable for 8 hours no matter how long I wait before powering it on?

I should also have said that iTunes on my iMac does not see the phone but that may be due to the age of the Mac.

Indeed, as I said above: the wrong passcode was entered many times by my mother.

I'm trying, unsuccessfully, to wipe her phone.

The Mac is a 2020 model - I think. However, the PC is running the latest version of Itunes - which cannot see the phone - and Apple Devices which does see the phone and attempts to restore it the most recent ios but fails to do so. The phone has been stuck with the Apple symbol and the progress bar at ~ 60% for about an hour. And I cannot shut down the phone.

Servant of Cats wrote:

Passcodes and passwords - Apple Support

“The delays are enforced by the Secure Enclave. If the device is restarted during a timed delay, the delay is still enforced, with the timer starting over for the current period.”

I have restarted it outside the timed delay but as soon as it is powered on the "wait 8 hours" message appears.

Servant of Cats wrote:

Escalating delays after repeated incorrect passcode entry attempts are a security measure to further discourage brute force attacks

If you try to bypass the delay, by power cycling the phone, the phone is programmed not to fall for that.

If you are seeing an eight hour delay, it probably means you get only ONE more chance to enter the correct passcode before you MUST reset and wipe the phone.

I am trying to wipe the phone.

Servant of Cats wrote:

Aardvaak wrote:

I have restarted it outside the timed delay but as soon as it is powered on the "wait 8 hours" message appears.

As the Apple Platform Security guide indicates, the amount of time that the phone is off doesn't count towards satisfying the delay.

If you shut down the phone before the 8 hour delay is up, then when the phone starts up, it will enforce a delay, resetting the delay to a full 8 hours. This is by design. If you shut the phone down after 10 minutes, and then spend a day doing something else before you turn the phone back on again, you will not get credit for waiting a day and 10 minutes. You will have to wait another 8 hours with the phone turned on.

Thank you.

I had missed the point about the phone having to be on for the duration of the wait period.

I'm trying to wipe the phone.