Att phones update OTA, when in the USA, and using ATT SIM card and service. You cannot update outside the USA.
(The following is included after all posts to save typing) I don’t work for AT&T. My replies are based on experience and reading content available on the website. Our answers are honest, but not always appreciated. If you posted personal information, please edit and remove.
Award for Community Excellence 2019 Achiever* *The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Unfortunately AT&T phones cannot update outside the USA or without using AT&T for service. Were you in the USA with an AT&T SIM installed, and using AT&T for service you could update your phone following the tutorials on our Device Support page.
We hope this helps!
Alexander, AT&T Community Specialist
Need help? Ask a question to get help from the AT&T Community or support from AT&T specialists. If this reply helped you please use Accept solution to mark it as an Accepted Solution.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.