Cynics Dvr Reset Password
If you bought your DVR from a specific vendor (Amazon seller, local security shop), email them the serial number and the date shown on the screen. They often have a master calculator. Do not send this to random people online; they could potentially backdoor your device.
Some Cynics DVRs are rebranded Hikvision or Dahua units. They use a "Secure Password Reset" via a .xml file. cynics dvr reset password