14.8.1 Download/Install Failed

Question

Level 1

5 points

14.8.1 Download/Install Failed

iPhone 6s.

Before 14.8.1 was available I tried to install ios 15 from my PC using iTunes. It would blue screen my PC (Windows 10) during download. I had latest updates for Windows installed and the latest iTunes installed.

When I saw that 14.8.1 update was available I tried to download it to my iPhone but it either says download failed or install failed. There's plenty of space on my iPhone for this update.

I have a feeling that maybe

my iPhone thinks iOS 15 is in process although it never installed? Is there anything I can clear out or reset so I can get 14.8.1 installed? Because as of right now I can't update anything.

I've attached both messages I get when I try to download/install 14.8.1. I get one or the either message when I try to download it.

Thank you.

iPhone 6s, iOS 14

Posted on Oct 30, 2021 9:26 AM

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Answer 1

Nov 2, 2021 12:33 AM in response to Volvo_Dude

Hi,

Lets start from the bottom, so to speak. The iTunes blue screening your PC is something that worries me.

From where did you install iTunes from?

A) Apple website

B) Microsoft store

Can you uninstall iTunes on your PC and install it again. (use newest version possible, or be sure to update one you will install to most recent one)

If that won't help try different download

if You used Microsoft Store version uninstall it and use the standalone installer.

Apple - Support - Downloads

and vice versa:

If You used standalone installer, uninstall it and use Microsoft Store version.

Connect your iPhone to PC and initiate update again.

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Answer 2

Nov 3, 2021 9:20 AM in response to Volvo_Dude

Hi Volvo_Dude,

Well no, 4GB of ram is not the issue here, is actually either your SSD or system corrupted file.

Windows DPC Watchdog Violations are internal sytem/hardware problems, altho this is not the Windows forum, I can give You some tips to check out ( I was Windows guy since 3.11 all the way to win10):

First and foremost check if there is a firmware update for your SSD disk. (and update it ofc.)

second thing is to check your system files:

To get started, open the Command Prompt program with administrative privileges. Next, in the Command Prompt program window, type:

CHKDSK C: /F /R and then press Enter.

it will tell You that disk is buisy and if you want to scan after reboot -> choose yes

Reboot your PC

after that there is SFC scan:

open the Command Prompt program with administrative privileges

Next, type:

SFC /scannow

and then press Enter.

Then check if You can update your iPhone via iTunes.

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Answer 3

Oct 30, 2021 10:02 AM in response to Volvo_Dude

Hi Volvo_Dude,

I would try force restart the iPhone 6s You have, try this:

Press and hold both the Sleep/Wake button and the Home button at the same time. When the Apple logo appears, release both buttons.

Force restart iPhone – Apple Support (UK)

I hope it will fix the issue. :)

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Answer 4

Oct 31, 2021 12:42 AM in response to Volvo_Dude

Hi Volvo_Dude,

Sorry to hear that, w can try something else. Could You please look on your phone and go to:

Settings->General->iPhone Storage,

and see if there is an update there (It will look like an app) if there is, delete it. Reboot your phone afterward and see if that help.

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Answer 5

Nov 1, 2021 10:28 AM in response to Volvo_Dude

hmmm Ok,

What version of iOS is installed on your device?

What happens when you try to update via settings->software update

What happens when you try to connect your device to iTunes on your PC and update from there?

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Answer 6

Volvo_Dude Author

Level 1

5 points

Nov 1, 2021 1:27 PM in response to Buzzraider

14.8 is installed.

See screen shots above to see what happens when I try to update.

I can't update via iTunes because there's a failed attempt of ios 15 that wants to keep downloading but it blue screens my PC.

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Answer 7

Volvo_Dude Author

Level 1

5 points

Nov 2, 2021 3:39 PM in response to Buzzraider

Hi.

I've already downloaded iTunes and installed it manually multiple times. I uninstalled it and reinstalled it. I even installed the latest version that was today. Didn't help.

I'm getting Windows DPC Watchdog Violations.

I can see that iTunes is downloading the update, but it appears to be caching it in RAM rather than writing it to the Hard Drive because the file stays at "0" on the HD as the download progresses in iTunes. This is a 5g file. I have 4g of RAM on my laptop. That might be part of the issue.