Nokia 8 ta-1004 android 9 is it possible to downgrade

PHONE "NB1GAD17B1501444" CONNECTED
ProjectCode : NB11
model : NB1
sub_model : none
software version : NB1-5140-0-00WW-B05
SW model : 00WW
build number : B05
hardware version : 3.1
RF band id : G_850_900_1800_1900^W_1_2_4_5_8^L_1_2_3_4_5_7_8_
secure : yes
Bootloader type : commercial
Download size : 00000512 mB
Elapsed: 35 secs.

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