You must install the latest Qualcomm HS-USB QDLoader 9008 drivers for your PC to recognize the phone. Windows PC: QPST is a Windows-only utility.
You're referring to QPS ( Qualcomm Product Support Tools) version 2.7.496. qpst.2.7.496
Allows users to view and manage the phone's Embedded File System (EFS). This is critical for repairing corrupted IMEI numbers or baseband issues. You must install the latest Qualcomm HS-USB QDLoader
Lenovo ThinkSmart View flashing process guide for Lineage 15.1 qpst.2.7.496