Yes, the BIOS updater (originally for Windows 7/8) generally works on Windows 10 32-bit or 64-bit. Right-click → Properties → Compatibility → Run as Windows 7. Windows 11 is not officially supported, but many users report success.
Because a BIOS update modifies the fundamental code of the motherboard, preparation is the most important step. If the power cuts out halfway through the update, the BIOS chip becomes corrupted, and the laptop will not start.
Most C660 models use InsydeH2O BIOS. They support emergency recovery: