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| Error Code | Meaning | Solution | | --- | --- | --- | | | Too many bad blocks; capacity reduced. | Lower the "Capacity Setting" tab value to 90% or 80%. The controller has remapped all usable space. | | No ISP found / Download ISP fail | Wrong firmware or missing .bin file. | Ensure the ISP folder contains the correct firmware for your exact controller and NAND type. | | Compare Fail | Verification mismatch (bad USB cable or unstable NAND). | Try a different USB port (preferably USB 2.0) and lower the DDR clock speed in Advanced tab. | | Device Not Found | The tool cannot see the drive. | Short the drive's test points (recovery mode) or use "Debug" mode if the tool supports it. | | Erase Fail | NAND cannot be erased. | The flash is likely dead or physically shorted. Replace the NAND or discard the drive. |
: It can often fix "No Media" errors or write-protected drives that other software can't touch.
Insert the USB flash drive. Click Test (or Scan USB) . The drive should appear in the tool's list. You will see information like "Found 1 Device."
