Since "SD Card" in this context refers to the communication bridge between PC and Phone, a driver issue can break this link. Reinstall the Qualcomm USB Driver and ensure the device appears as Qualcomm HS-USB QDLoader 9008 in Device Manager.
Treat your UUPDump bin SD card like a lab instrument—dedicated, clean, and purpose‑built. “Exclusive” isn’t just a recommendation; it’s the difference between reliable Windows binary generation and random deployment failures. Label it, lock it (physically if possible), and never borrow it for casual storage. Your future self, in the middle of a UUP conversion, will thank you. uupdbin sd card exclusive