: This release likely focuses on stability and maintenance rather than a complete overhaul, addressing specific bugs found in v120r3 .
: Implementation of more granular error codes to help technicians identify hardware faults or wiring issues without needing to dismantle the unit. sc24738-KACv120r4.rar
: Updates to encrypted handshake protocols to prevent unauthorized access via the local maintenance port. : This release likely focuses on stability and