Your solution is here: OnePlus - 9 Pro - lemonadep - Documentation Suggestions - #16 by GaelDuval
Godsend!
To get the partion files I needed, I had to adjust the parameter for the OnePlus 8 Pro since it’s “vendor_boot” is labled “vbmeta”. So for me, after extracting the payload-dumper-go.exe from the latest release you linked, and the payload.bin from the build file, I used the following commands:
payload-dumper-go -partitions dtbo -o . payload.bin
payload-dumper-go -partitions vbmeta -o . payload.bin
This really saved me as I have been stuck on finding the right partition files for the Oneplus 8 Pro. thanks again!
SafetyNet test pass on OP9 Pro, on /e/OS S-1.7 (latest S available) and T (testest on 1.20)