Diagnostics (practical, minimal tools)
| Error | Solution | | :--- | :--- | | | Reverse the tweezer pins. Short for 5 seconds instead of 2. Try a different USB port (USB 2.0 works better). | | "Download Firmware Fail" | Your firmware file is wrong. Extract the NAND ID manually using a tool like "ChipGenius" on a working PC, then search for that exact ID. | | "Bad Block too many" | The NAND is dying. Reduce the drive's capacity in MPtools by setting "Auto Detect Size" to manual (e.g., force 32GB instead of 64GB). | | Drive reverts to 0 bytes after replug | You forgot to check "Fix Capacity." Reflash with that option enabled. | firstchip fc1178bc firmware hot
Last Updated: October 2025
Troubleshooting steps