Updates to the front panel control firmware and the digital bus interface may be made available from time to time, either to fix bugs or add features. This firmware resides in flash memory and can be updated via the USB interface. Both pieces of firmware are updated from a single file. The current firmware versions can be checked from System menu or by using the *IDN? query from the remote interface. Two numbers are shown: the Main Control version number and then the Interface version number. (Note that a third number may also be shown which is not field updatable.)
This firmware is applied using the Firmware update utility linked to below which also includes a readme with instructions.
Main version 1.04 fixes bugs in the 120V/3A range calibration
Interface firmware version 1.03 adds LXI/LAN updates to fix mDNS network dropouts.
Interface firmware version 1.04 fixes a problem with VRANGE3? returning incorrect response if range 2 was set to 60V/3A range.
Interface firmware version 1.05 fixes a problem with remotely reading the output voltage on the 120V range on output 1.