I have been struggling to update this in the recent months in my stock Android 11 - Unihertz Atom L device. I tried to clear cache and app data for Google Play Store, Google Play Services, finally I tried to factory reset the whole device, but no luck. I can't update it manually. It says it's up to date... The manufacturer cannot help me because they dont know what is this. There are users who dont have this problem. How I get support from Google, or how I can report this bug to Google? There are articles about this phenomen with other Android 11 devices but no one knows what happens when this update stops working monthly, there is no fix for this? Even if it works the update is pushed randomly and no one knows when you will get finally. I reseted the phone 2 days ago, but I dont know if will update at some point or not. The whole process is a mess from Google, because the manual update is not really manual. Thank you for helping me!