Use a tool like ChipGenius to confirm your controller is indeed an SM3257ENAA . Run as Administrator: Open smimptool.exe .
Bypassing software-level "read-only" errors. sm3257enaa low level format tool v20047 download 2021
Select the correct "Pretest" level (usually "Erase All" or "Full Scan"). Click "Start" to begin. Warning: This will permanently erase all data. Use a tool like ChipGenius to confirm your