This "VIS" often refers to the Visualization or Forecasting System used by the bank to track economic stability and inflation.
If you are new to custom builds, flashing firmware can be intimidating and carries a small risk of "bricking" the board if done incorrectly. vis 65 cz download link
If your VIS65 uses Vial, you can download the software from Vial.rocks. This "VIS" often refers to the Visualization or
Once you find a .exe , .msi , .zip , or .dmg : or .dmg :