Tracks degraded or dead memory cells and replaces them with spare blocks.
The Ultimate Guide to SM2259XT Firmware: Architecture, Issues, and Recovery sm2259xt firmware
Your shorting of the pins was unsuccessful, or the NAND chips are physically dead. 📝 Summary Checklist Identify the NAND ID using a flash ID utility. Download the matching SM2259XT MPTool version. Backup any data (if the drive is still partially readable). Short the pins to enter Safe Mode. Flash the firmware and test for stability. Tracks degraded or dead memory cells and replaces
If you are dealing with a failed SM2259XT drive right now, please let me know: What is the SSD? sm2259xt firmware