How do I update Divesoft Liberty firmware?
Update both Liberty control-unit and handset firmware with the head removed from the rebreather body, following the current firmware instructions.
The CCR Liberty’s electronics have two different types of firmware (FW): one for the control unit and another for the handset. It is possible to download the current version here, from the firmware.
Perform updates with the head removed from the rebreather’s body. It is necessary update both CU and handset FW, different versions of CU and handset FW may result in unexpected behavior.
An exact description to follow can be found in your Liberty manual (pp. 75 – 77).