Hi, I use a nokia lumia 520. I recently downgraded it from windows 10(developers preview) to windows 8.1(cyan). Now every time I check for updates, it gives me the error 80072f8f and wouldn't let me download any updated or languages. P.S. I live in india & date is set right. Region is India (UTC+5.30). Language id English(India). Tried checking for updates using data connection and wifi. I think the phone got messed up during the during the downgrade.