Hi everyone, similar to my threads for OP3, OP3T, OP5, OP5T and OP6 as unbrick tools allow to (obviously) unbrick your phone but also to rollback to specific versions of Oxygen OS I decided to search for more and succeeded in that.
I linked to 9.0.11 , 9.0.6 and 9.0.5 packages shared by @iaTa in his thread and by @SpasilliumNexus in his AFH here, rest has been found and shared by me.
As the instructions and Qualcomm drivers are already available here , I don't feel a need to rewrite them.
You can ask questions here on how to use and issues, however I might not be able to answer immediately.
Here are the files uploaded on AndroidFileHost ordered by Android version:
You can find a mirror for most versions here, courtesy of AnonymousWP.
Password for it is N3v3r S3ttl3 tm