My phone (Nokia 7.1, Android 10) downloaded a Google Security Patch update over night and asked me to reboot the system for installing the patch. But after the reboot, it said that the system is corrupted and the phone needs a factory reset. I don't want to lose the data on the phone.
I can get the phone into Download mode and communicate to it via fastboot and I tried to use adb to sideload the original Android 10 image (29ad19....zip, which is build 4_08D), but it won't let me install it because the build timestamp is older than my current system's build timestamp and it refuses to let me downgrade.
I tried re-installing the latest security patch (4_08F) from here via adb but the system says that this patch was meant for 4_08E not 4_08F. This is confusing because if the system had trouble installing this patch in the morning, it should have stuck with 4_08E, right?
My questions to the community are as follows: 1) Can I force my phone to downgrade and install an older system without losing my data? If so, could someone point me to the correct instructions? 2) Are there newer updates for Nokia 7.1 that I've not found which I should be trying to install?