Your shorting of the pins was unsuccessful, or the NAND chips are physically dead. đź“ť 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.
In DRAM-less designs, the firmware stores the mapping table—which tracks where data is physically located on the NAND—directly in the NAND flash or a small internal SRAM, rather than external DRAM. NANDXtend™ ECC Technology:
Using the wrong firmware version or power-cycling during an update can permanently damage the controller.
| Error | Meaning | Solution | |-------|---------|----------| | | Drive not in ROM mode or USB bridge incompatible | Try a different USB adapter (JMicron JMS578 works best). | | Compare F/W Fail | Downloaded firmware vs. NAND revision mismatch | Extract Flash ID and find a package with your exact NAND. | | Bad Block Count Too High | NAND is physically failing | Lower pretest to "Erase All Block" or reduce capacity (e.g., 240GB → 120GB). | | Timeout: Device not ready | Controller locked up | Power cycle. Short ROM pins again. | | Error: DRAM test | Confusing because XT has no DRAM | Wrong parameter file; ensure "DRAM-less" is checked in settings. | sm2259xt firmware
Last updated: October 2025. Specifications and tool versions current as of this writing. Always back up data before attempting any firmware operation on an SSD.
Typically, a ZIP file named SM2259XT_MPTool_Q1104A_1152T.rar – the numbers refer to the MP Tool version. Look for builds from Q1024A to Q1225A (newer drives need newer tools).
The SM2259XT is a four-channel SATA 6Gb/s SSD controller designed by Silicon Motion, a market leader in flash memory controllers. What makes it so popular among SSD manufacturers is its cost-effective, DRAM-less architecture, which reduces the bill of materials (BOM) cost while enabling various small form factors like 2.5-inch, M.2, and mSATA drives. Your shorting of the pins was unsuccessful, or
"Another SM2259XT," he muttered, tracing the Silicon Motion logo on the controller chip.
Best suited for low-power, cost-effective consumer PCs and industrial storage where high-speed NVMe performance isn't required. Silicon Motion Firmware & Known Issues Stability Improvements: Recent firmware updates (e.g., version ) have focused on improving SPOR (Sudden Power-Off Recovery) stability and Garbage Collection efficiency. Common Failures: Firmware corruption is a known issue for
Set the drive's targeted capacity and customize the Vendor/Model strings if desired. Step 5: Execute the Flash Process Return to the or Main tab. Backup any data (if the drive is still partially readable)
: Addressing errors like the "F46F/F24B" errors through targeted ISP (In-System Programming) updates. đź“Ą Accessing & Installing Firmware
I can then help you find the specific version of the tool you need. SMI SM2259XT2 MPTool FHY3D-V8 Y0318A0 FWY0317A0
The (e.g., drive not detected, detected with 0GB, or read-only).