Unzip the downloaded firmware. You should see files like XYAUTO_UPG.bin , update.img , or a folder named 8227L .
Most 8227L units run Android 8.1 or Android 10 Go under the hood. “Android 11” in the settings is often a build.prop edit to show fake version numbers. However, some recent custom ROMs bring real Android 11 (Go edition) features. 8227l firmware android 11