If you are locked out of your hardware, you don't need a "crack." There are official, secure methods to regain access:
Understanding ZKTeco Security: Risks and Realities of "Cracks" zkteco crack
Most "crack" executables found on forums contain Trojans or ransomware . Since these programs require administrative access to run, you are essentially giving a hacker keys to your entire server. If you are locked out of your hardware,
ZKTeco often offers a "Lite" or free version of their software for up to a certain number of doors or users. Most terminals (like the SilkID or Horus series)
Most terminals (like the SilkID or Horus series) have a physical reset button or jumper on the backplate that can restore factory settings, though this will wipe existing user data. Secure Alternatives to Cracking
Authorized dealers have access to a Password Reset Tool that generates a temporary "Super Password" using the device's serial number.