Hello
AT&T pushed any OS updates to its Windows Phones and the phone must be used on AT&T's network with an active AT&T account to receive any updates.
Please let me know if you have any other questions.
Thank you,
Dmitriy
Hello
AT&T pushed any OS updates to its Windows Phones and the phone must be used on AT&T's network with an active AT&T account to receive any updates.
Please let me know if you have any other questions.
Thank you,
Dmitriy