added lines and changed build.prop files in system and vendor too. it shows name as Mi 9 Lite as i want but i cant do the third step.
adb shell. when i try it says : Argument expected to be 'default'
adb shell settings get global device_name works and shows name as =MI CC 9
adb shell settings put global device_name "Mi 9 Lite" -doesnt work
adb shell settings put global device_name Mi 9 Lite -doesnt work
adb shell settings put global device_name 'Mi 9 Lite' -doesnt work