Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

13 points

any idea what error 3503 is?

I was updating my iPad to the latest iOS version and the install crashed. whenever I'm trying to reset the iPad I get a message from after it extracted the firmware that the iPad couldn't be restored and that an unknown error occurred (3503). Any clue ?

Posted on Nov 30, 2016 5:12 AM

Best reply

jenickhof

Level 1

9 points

Posted on Sep 24, 2017 3:56 PM

You have to turn off "Find My iPad/iPhone" first, then go through the steps of connecting to iTunes and update/restore. You can turn off "find my [device]" by logging in to the apple website from your computer.

View in context

187 replies

walidek

Level 1

8 points

Sep 25, 2017 6:16 PM in response to walidek

got got, going to try right now

i have a iPhone 5 to restore ios 11

walidek

Level 1

8 points

Sep 25, 2017 6:24 PM in response to Ble75

it is something that got to do with SHSH i think

walidek

Level 1

8 points

Sep 25, 2017 6:34 PM in response to walidek

THANKS GUYS

THANKS

IT WORKED

THANKS APPLE ENGINEERS

THANKS EVERYONE

Sep 25, 2017 6:48 PM in response to Ble75

log into iCloud.com/find

click on device you are trying to restore

remove from account

then restore/update in iTunes

Sep 25, 2017 11:32 PM in response to Ble75

iPhone 3505 Error How to Solve? - YouTube

drwhoca

Level 1

4 points

Sep 26, 2017 9:10 AM in response to jenickhof

Doing this caused us to lose all of our child's first videos. When we selected this it erased everything from our ipad. 😟 I spent the entire evening crying.

Sep 26, 2017 12:27 PM in response to Ble75

did you have an icloud backup? the error seems to have been on the apple side and now should work with a simple restore.

any idea what error 3503 is?