Temporarily disabled Memory Integrity, installed the driver, performed the flash, then re-enabled HVCI. The driver continued to work after re-enabling because Windows caches the approved driver.
Never permanently disable signature enforcement. Instead, find properly signed drivers or use temporary bypasses only for a single flashing session. qualcomm usb driver digital signature
If you are a developer or a technician forced to use a modified or unsigned driver (for example, a specific 9008 driver for a new chipset that hasn't been officially released), you must use the Windows Test Mode. Instead, find properly signed drivers or use temporary
When you plug in a Qualcomm phone in Emergency Download (EDL) mode, Windows checks this signature against its own trusted certificate store. Connect your Qualcomm device to the PC using
Connect your Qualcomm device to the PC using a stable USB data link. Press Win + X and launch the .
signtool sign /v /fd SHA256 /a /t http://timestamp.digicert.com qcser.sys