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I don't know if it has any answers, but you might look at some of the discussions in this thread: It is mostly a discussion about the Pro1, but towards the end of the thread there is also discussion of the Pro1x. It may not resolve anything, but will give you an idea of what has been tried and with what degree of success.

Lineage-21.0-20241109-nightly-pro1-signed.zip on October 1 (2024) security patch, installed smoothly using OTA

It might help if you gave more information on where you are at and what you need help with. For instance, have you looked at and tried to follow the instructions here? https://wiki.lineageos.org/devices/pro1x/install/ They are actually pretty clear instructions. If you don't understand or are uncomfortable with the instructions, chances are you shouldn't do it. Take your time to read everything carefully and then maybe ask specific questions on what you don't understand.