At the I / O 2018 developer conference last month, Google announced
The most difficult thing to understand is that these users, after playing Google's security patch in June, found that the Android version was downgraded to Oreo. In fact, the size of the update package is 1.3GB, which means that it is more than just a security update.
After being downgraded by force, the user encountered a large number of
More frustrating is that you can't roll back the installation packages provided on NOKIA Android P page because it is much older than the current version.
In general, the Beta test and the staff preview version will contain some of the larger bug or problems, but the unintentional confusion caused by the demotion makes it more complicated.
If it doesn't work, users can restore their phones to the factory settings at least, so that they can use a more stable Android 8.1 Oreo.
NOKIA did not comment on the situation. A community forum moderator said that HMD Global will investigate the matter.