Just attempted the latest lineage-18.1-20211021-UNOFFICIAL-trlteduos build but no luck, Error 1. I noticed that the Target release-key is different from what I pulled from Havoc Q in the previous thread, see the screen shot. Thank you.Have you ever tried flashing any single sim "trlte" rom builds? I made a small change in the build fingerprint file in our 18.1 sources that seemed not to follow the usuall pattern for the device name, so I fixed it. This was only in the N9100ZC fingerprint override so perhaps this is the cause of the problem. If you take a look at the full fingerprint in the line above, you will see that the "name" entry appears before the "device" entry, but for some reason I used the device codename for both.
New builds tomorrow.