Originally Posted by Devo7v
If you have an AT&T sim card in the phone then you will receive AT&T updates. Also, the updates will only download over WiFi, presumably because their so large and AT&T didn't want to take up bandwidth on their towers.
I just received 2 more unlocked, unrooted, ATT SGH-i537 SG4A phones, completely ATT stock image.
They are running Android 4.3 I537UCUBML2 and both find just fine the ATT update file, 444 MB using System Update.
After download, they reboot, start Update process and fail at 29 percent *Update failed* but no other diagnostics.
So, these can not be updated via Kies and can not be updated via ATT WIFI Update.
What next ? Would a manual Stock recovery update make it worse ? I have the I537UCUCNE3 file sitting on a microSD card. Just contemplating what may be best as these are still under full warranty.
Don't need root, just wanted to update to 4.4