Hi, I made a twrp backup of 20191204 firmware from a new box bought last month. Backup was made on clean firmware, nothing changed.
I'm not completely sure if you can restore my backup to your device, as device ID's are different but if you want to try:
Unpack zip, copy twrp folder and recovery.img to sd card, boot into twrp and make a restore. I am not responsible if you brick your device.