Hello,
i really dont understand what you are trying to do. Once again i will try to explain that you cant exchange the firmware of the ultra plus SSD to the normal Standard SSD(SDSSDP).
if the drive is not detected at all by the pc its defective and it needs to be replaced so you dont have to try to update the firmware of it because its not needed.
so once again if the drive failed go to the place of purchase for a possible replacement or contact sandisk support for warranty replacement
