Installed original firmware (T813XXS2BQG3_T813PHN2BQD1_HOME.tar), restarted, installed twrp (3.1.1-1-gtsvewifi), restarted, and finally rooted system and restarted. So far so good. Then tried to install the zip file lineage-15.0-20170910-UNOFFICIAL-gts210vewifi with TWRP and got the message "The...