Software update for iPad keeps failing

I have a 2nd Gen IPad Pro 12.9, when trying to install the iPadOS 14.2 software update it is able to download the update but always fails when I get to the installation. It says unable to install update, an error occurred installing iPadOS 14.2 and I have the option to retry or remind me later. Neither has worked and I’ve tried restarting my iPad and logging out and back into my icloud, I also have WiFi and a substantial amount of charge, anyone know how I can get past this please?
Up vote post of TiredJosie Down vote post of TiredJosie
3.8k views
Posted by
TiredJosie
Reply
Add a Comment

Replies

Same problem here. Factory reset of the iPad did not result in success either.
Posted by
Sparklemuffin
Up vote reply of Sparklemuffin Down vote reply of Sparklemuffin
Add a Comment
I was able to get the update installed using iTunes on a Windows PC. However, you may want to try just the first 3 steps before trying iTunes, just in case that helps.

  1. In settings, disable your passcode

  2. In settings, set the screen auto lock to "never"

  3. Disable facial recognition if your device has that feature

  4. Connect the device to a Windows PC using a USB cable

  5. Update the device using the latest iTunes downloaded from Apple (not through the Windows store)

  6. Re-enable your passcode, screen auto lock, and facial recognition

Some of the ideas came from an article and its comments which you can find by searching for "appuals how to fix update error 4000 on iphone" (this site will not let me add a link to the article).
Posted by
Sparklemuffin
Post not yet marked as solved Up vote reply of Sparklemuffin Down vote reply of Sparklemuffin

  • Thanks Sparklemuffin, I’ve been trying over and over again over the past few weeks to update my iOS 15 iPad to first 15.0.1 and then 15.0.2 from my iPad as well as iTunes. I followed your steps exactly and it finally updated correctly.

    One thing I noted which I’m not sure is related or not, my iPad internal storage always says “Zero KB of 256 GB Used” when I am only using around 100 GB and iTunes shows the “Other” category as a size of 16,777,215.81 TB which is pretty far off reality. Just throwing this out as an observation in case there is a correlation for anyone else having this issue.

    Thanks!

    —
    ironklad

  • Thank you very much Sparklemuffin. Your solution was the only working one.

    Was troubleshooting for over an hour. Thanks for saving my time!!

    Have a good one!

    —
    maexle101
Add a Comment
I tried the first 3 steps that sparkle muffin suggested on my iPad and it worked. After months of not being able to install. Thanks so much.
Posted by
Webdiva
Up vote reply of Webdiva Down vote reply of Webdiva
Add a Comment