Scan any downloaded file with VirusTotal. Run it in a sandbox or on an offline PC if possible.

Close the software, press the printer’s Power button to turn the machine off, wait 10 seconds, and turn it back on normally. Your 5B00 error code will be completely gone. Troubleshooting Common Errors Error Code 006 (Communication Error)

Using this software incorrectly can cause irreversible logic board locking or "bricking." servicetool_v1074 - TestCopy