Serial numbers 1000082xxxxx
How do I update firmware? What is the latest firmware?
The latest firmware is V4.26
Firmware can be upgraded using the code and utility here
Where is the user manual?
User manual is here
How do I Calibrate the unit?
Any good calibration house should be able to verify the unit to the spec.
However there is no 3rd party method for calibration/adjustment should it fail.
Voltech still provide calibration and repair services to the published spec.
Please contact firstname.lastname@example.org for more information.