Unable to install iPadOS 15.0.1 on iPad pro 10.5 (256 gb)

It's worked for many so it's at least partially correct for some devices. It's a major hassle getting into recovery mode while it's connected to iTunes. You have to seriously hold the buttons for a LONG time and then let the computer install drivers (windows). It took another 30 minutes to update but after had 15.0.1 installed.

You can go to any apple shop or reseller as they will help you. Or you just use itunes on a windows machine, which will probably also reolve the issue

Seeking assistance directly from Apple Support may be your best remaining option - using the Get Support link at top-right of this page.

If you have another device, you can also initiate and manage support cases using the excellent Apple Support App. If not already installed on your device, the App can be downloaded from the App Store:

https://apps.apple.com/gb/app/apple-support/id1130498044

A further alternative is to find help at the Genius Bar of your local Apple Store or Apple Authorised Service Provider:

Genius Bar Reservation and Apple Support Options - Apple

15 Update worked on my iphone without any issues. It downloaded on my older ipad 5th gen. But failed to then install. I offloaded some apps I rarely use to ensure enough storage space for the update. After attempting to install the downloaded update multiple times, I booted down the ipad & restarted it. It quickly gave me a msg to install new updates. Which it did for about 20 min using 5GHz connection. Apple icon appeared with bar underneath showing the progression on two occasions during install. It was successful! The update size is 0.8GB. Not sure abt the glitch, but i did restart my ipad to get the downloaded update to install. Hope this info helps someone else.

The SIM card thing is the only thing that worked for me too. I have a iPad WiFi + cellular with no SIM card in the slot. Deleted the downloaded but not installed 15.0.2, ejected the sim holder, insert a nano sim from an old iPhone 6s, toggled on cellular, downloaded the new update, installed no problems. Removed the old SIM card. Hassle but it worked. No more “verifying update”.

You don't even have to switch cellular on or off, or use an old SIM card. Just remove the holder. That is enough to move the process along.

LOTS (like millions ) of users trying to download and install this updated and are NOT getting through or being unsuccessful

Many users NOT having this issue.

Maybe too many users trying to get this update from Apple's servers all at the same time.

Try again at some later date.

What is everybpdy's hurry?

I have had this happen.

All of my family, including me, have Apple devices.

In total 10 devices.

I am the “Apple expert” for my entire family.

I had recently updated Apple devices to 14.8 ( before iPadOS 15 was made officially available ) successfully, but two devices just were just being stubborn on the same day.

I didn't do theupdate right away, for these devices, as I am always FULLY aware of a percentage of world wide users who just twitch rush to download every single major and minor upgrade/update that Apple puts out!

I had to use iTunes on my Mac for all of these devices to upgrade/update them all!

I gave up on the last two that were giving me a lot of issues and I waited a day, or so, to update the last two devices and everything went fine.

Have NO clue what had happen, but I spent hours trying to get those last two devices ( late into the evening I was updating all these other iOS/iPadOS devices ), I just gave up on that day with the two last devices., but a day, or so, later, the update to those devices went fine without any glitch.

So, you tell me what happened there.

The updates 15.0.1 has been successfully installed on my iPad mini 5 but failed on my iPad Pro 9.7 (1st generation). Both had been running 15.0. I think it is likely that the updates do not work smoothly on old iPad. Waiting for a new release might be the best option. Although someone posted solutions but for a minor update like this, it is not worthwhile.

If I can add my 2cents here, keeping in mind that this workaround can affect keychain and/or Apple Pay (if in use, you might need to re-input data), try these steps to solve error 4000 on your iTunes:

• Disconnect your device from the computer
• Temporarily disable the passcode on your iPad
• Restart the iPad
• Restart iTunes
• Reconnect the iPad to your computer and restart the update procedure.

When finished, re-enable your passcode on your iPad.

Regards

Giulio

Use Apple Configurator 2

Now i fix the error for my ipad pro 10.5

Configurator 2 did the trick for me too.

Same thing will happen with 15.0.2, it won't install just like 15.0.1 wouldn't. Need to use a computer for it as well.

Error #4000 is not explicitly listed by Apple. When your iPad is connected to a computer, these errors are often attributed to a USB issue, a faulty cable - or possible interference from Anti Virus software.

Try using a different cable, a different USB port - or, at your own risk, temporarily disabling your AV software.

iOS update and restore errors – Apple Support

If you see error 9, 4005, 4013 or 4014 when you restore your iPhone, iPad or iPod touch – Apple Support

There’s clearly an issue with iPadOS 15.0.1 and iPad Pro 10.5”. The internet has lit up about this. About to try update via my MacBook Pro and a cable, but multiple users report the same failure to update.