If you have access to a (MS Part #X885495-001), you can attach it to this port and send the command: fpt -erasebiospassword fpt -clrbiospassword
Disclaimer: This article is for educational purposes and for recovering access to devices you legally own. Bypassing security on lost or stolen property is illegal. Proceed at your own risk. surface pro 4 bios password reset high quality
If you value your time, buy the SPI programmer. If you value your device, practice on a junk laptop first. And if you are not comfortable soldering or clipping onto a motherboard, pay a professional repair shop $80 to do the SPI flash for you. If you have access to a (MS Part
These tools are not sold to consumers. They are available to Microsoft Certified Refurbishers. Unless you work for a large IT department, ignore this method. | Method | Difficulty | Success Rate | Risk of Bricking | Cost | | :--- | :--- | :--- | :--- | :--- | | Default Passwords | Easy | 5% | Zero | Free | | WinRE Backdoor | Medium | 20% | Low | Free | | Keyboard Brute Force | Easy | 15% (Old FW only) | Zero | Free | | SPI Programmer | Hard | 95% | Medium | $10-15 | | Microsoft Debug Port | Extreme | 100% | Low (if you own probe) | $500+ | If you value your time, buy the SPI programmer