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unable to update my iPhone 6s plus to the latest IOs. Keep getting error. And if I try upgrading via iTunes, it says I must upgrade iTunes to the latest version, but it is already running the latest version. What can i do?
iPhone 6s Plus, iOS 12
UPDATE: I was finally successful in upgrading my iPhone 6s Plus to iOS 15.3.1. I connected the iPhone to my pc (Windows 7 running iTunes version 12.10.11.2). I reset the iPhone (erase all content and settings). When it completed and appeared in iTunes, I selected restore and restored from a backup I did the day before. Once this completed, I was able to upgrade from the phone (not via iTunes). Thank you for your assistance!
UPDATE: I was finally successful in upgrading my iPhone 6s Plus to iOS 15.3.1. I connected the iPhone to my pc (Windows 7 running iTunes version 12.10.11.2). I reset the iPhone (erase all content and settings). When it completed and appeared in iTunes, I selected restore and restored from a backup I did the day before. Once this completed, I was able to upgrade from the phone (not via iTunes). Thank you for your assistance!
To update over the air from the phone all of these requirements must be met:
If you can't meet all of them you can still update using your computer.
What error do you get when you try to update?
I suspect that you have an iPhone 6 Plus, not a 6S Plus, because the 6S would not have iOS 12 on it. And a 6 Plus cannot be updated to newer than iOS 12.5.5
and if I go into settings on my iPhone 6s plus, and go to software update, it shows ios 15.3.1 is available. I can select download and install. That is successful. Then is goes into preparing update which is also successful. Then it starts installing (verifying update) and then fails with the error "Unable to Install Update, an error occurred installing IOS 15.3.1. I have the option to retry or Remind Me Later. i have tried numerous times and I get the same results.
I’m pretty much stumped. Desperate things to try:
Go to Settings/General/iPhone Storage and look for an iOS update file. If you find one, tap on it and delete it, then try again.
Go to Settings/General and look just below VPN. If you see an entry for Profiles open it, tap on a Beta profile (if there is one) and delete it, then restart the phone.
Also, just below VPN, look for Device Management, open it, and if you see a management profile, delete it.
I have deleted the iOS update file and tried again, several times. Still getting the same results. There are no VPN profiles. There is no Device Management listing. I'm thinking this iPhone has some sort of software corruption.
Well, I think I have now totally killed my iPhone. I followed the instructions for putting it in DFU mode. While the procedure worked in that my iPhone appeared in iTunes. But when i select restore, I get an error in iTunes saying that in order to restore the iPhone, I need to upgrade to the latest iTunes version. Unfortunately, on my Windows 7 machine, I am running the highest version of iTunes permitted so i cannot upgrade iTunes to the version needed to restore my iPhone. So now my iPhone is totally dead.
The only way I was able to successfully install the update on my 6S Plus was via itunes on my mac. And, rather than choosing 'Download and Update', I did it in 2 steps; downloaded update first then did the install. Maybe trying that way will work for you? FYI...both took quite a long time.
Yeah, tried that too but get the same iTunes message saying I need to upgrade iTunes. But I'm running the latest version supported. In iTunes when I click on Help>Check for Updates, I get a popup saying iTunes 12.10.11 is the latest version.
and that is the version of iTunes I am running.
A rather bizarre thing happened (well, maybe not so bizarre) after I was able to get my phone out of the DFU mode. My iPhone started loading software and rebooted it took a long time and i was thinking it finally took the upgrade. It did not. It reloaded the version the same iOS it had been running, 12.4.1. After that completed, I again attempted to upgrade to 15.3.1. And again, it went through all the motions (taking a very long time) and when it finally rebooted, it was again on 12.4.1. So I am thinking, either this iPhone will not support 15.3.1 or I may need to borrow a pc running a newer iTunes release in order to successfully upgrade it.
On my iPhone, Settings>About>Model Name iPhone 6s Plus, software version 12.4.1
And what happens when you go to Settings/General/Software Update?
If it’s software corruption, restore the phone using DFU mode→How To Put An iPhone In DFU Mode, The Apple Way
UPDATE: I was able to power it back up by holding down the home button and the sleep button for a few seconds.
unable to update my iPhone 6s plus to the latest IOs. Keep getting error. And if I try upgrading via iTunes, it says I must upgrade iTunes to the latest version, but it is already running the latest version. What can i do?
