installing Oneplus 9 Pro Update via TWRP

Hi

I would like to update my oneplus 9 pro from 11.2.8.8 to the latest version 11.2.9.9

I have extracted the 142 MB OTA zip file but I cant update it via TWRP. I have unziped the file and I just found a payload.bin file so I have dumped the payload.bin but I just got the .bin files of the updates (for example a 32 MiB system.bin file. I also tried with Oxygen OS Stock Recovery but I just get an unspecific error.

Is a way aviable to flash the update via TWRP?