Do run this tool on a healthy drive. Use it only if:
Your drive is in "pre-format" read-only mode. Short-circuit the controller’s test points (look for guides on "Phison 2307 reset") or use the (simple recovery tool) to force a mode change. Phison Ps2251-07 Firmware Update Tool
Explain how to enter if your PC won't recognize the drive. Do run this tool on a healthy drive