SMI (Silicon Motion, Inc.) is one of the leading manufacturers of flash memory controllers. The is a popular USB 3.0/3.1 flash memory controller chip found in a wide variety of flash drives, including popular brands like SanDisk, Transcend, Kingston, and various generic OEM drives.
Do not confuse this with SM3271 (without the 'AD') or SM3257 tools. The AD variant has specific timing requirements for 3D NAND. smi sm3271ad software download
In most cases, the drive is not physically dead. The firmware has become corrupted. To fix this, you need the specialized (also known as MPtool or Factory Tool). SMI (Silicon Motion, Inc
If your drive is 32GB or smaller, the time spent on an and repair may exceed the cost of a new drive. However, if the drive contains irreplaceable data (and you do not have a backup), the MPtool is your last hope. The AD variant has specific timing requirements for 3D NAND