Update failed on Samsung Galaxy S4

I have a unlocked AT&T Samsung Galaxy S4 which is running Kitkat version 4.4.3. When I check for updates, I see an update available for 488 MB, it downloads and then installs but fails at 27% every time. It just says update failed and reboots. I tried even doing factory reset and trying the same but it failed again. I checked online but was not able to get a proper answer. What are my options to update my phone to Android 5.0? I tried taking my phone to Samsung experience in best buy and they said they would not be able to upgrade a phone which is unlocked.

Will AT&T store be able to do the upgrade? How do I get past this error and update my phone? It will be great if someone can guide me

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by njohnston
1 hour ago
Last post by ashton.reynolds
1 hour ago
Last post by hackett.hayden
1 hour ago
Last post by aleannon
3 hours ago
Last post by lemuel34
38 minutes ago
Last post by ystroman
4 hours ago
Last post by cassin.cynthia
4 hours ago
Last post by jesse.hermann
3 hours ago
Last post by andre39
3 hours ago
Last post by strosin.jerald
2 hours ago
Last post by qrippin
2 hours ago
Last post by vallie.smith
3 hours ago
Last post by lessie.luettgen
3 hours ago