Millipore Spectroquant Multy Operating Manual page 252

In the event that no values are shown under "Target", this
indicates that it has not been possible to establish a connection
between the colorimeter and the PC. In this case please
check the cable connection and the communication settings.
Now press the F9 key on your PC to prompt HexLoad to start
the update sequence. The following stati are now displaced.
The previous software is deleted:
Fig. 4
Fig. 5
... and the new software is saved:
In the event that the error message "Communication time out"
appears at this stage, this indicates that other programmes are
still running in the background that are interfering with the
software-update routine. Close these programmes and repeat
the software-update procedure.
Fig. 6
The new software is now checked.
Chapter 5.5 | Page 4 of 5