@DD47: Just a guess, according to my experience with TA-1020 in Germany. HMD's implementation of the software update process was wrong in Android 7.0 and pre-September updates. Removing SIM card, factory reset etc. was the only method that worked for me to receive Android 7.1.1 with September update. After that, October update was available automatically (yesterday), and I hope that further updates will be available also, without any problems. The factory reset is really annoying, but it was the only option for me to get September update. As I said, just my guess - do it at your own risk!