Boot into a Linux Live USB (like Ubuntu) and see if the drive mounts. Linux handles generic NAND controllers far better than Windows. If Linux reads it fine, the drive is healthy, and Windows is the culprit.
Tools used to rescue "bricked" flash drives often require exclusive access. Standard OS drivers mount the drive as a file system, which prevents low-level tools from rewriting the partition table or accessing the controller's factory mode. An exclusive driver un nand usb2disk usb device driver exclusive
Only one process (or kernel thread) can open the block device at a time. The driver implements an exclusive open flag. Boot into a Linux Live USB (like Ubuntu)
controllers (e.g., part number chipYC2019) and Hynix NAND flash memory. the drive is healthy