VeriFone VX570 Credit Card Terminal (Dual Comm DCSC) (M25755302NAA) "machine message 39 bad" Questions

...machine  (VX510, VX570 etc.) and bad MAC (message authentication code) and i believe if the machine is not encrypted right or the encryption was errased for some reason, bad mac will appear. ...

...message, anyone can help me? i want remove the error and safe existing software in my Verifone VX570's. Thanks and waiting for reply. Bad RTC and Tamper can be repaired. the machine is ...

message. bad RTC can be repaired. the machine is equipped with multiple sensors inside. if one of them goes bad, tamperring or bad rtc will come up. call Us (775)358-2922  we can help you. thanks