Siemens SINAMICS G120 Operating Instructions Manual page 359

7. Remove the card with the firmware from the inverter.
8. Switch off the inverter power supply.
9. Wait until all LEDs on the inverter are dark.
10.Switch on the inverter power supply.
11.If the firmware upgrade was successful, after several seconds the inverter LED RDY
You have successfully updated the firmware to a more recent version. When upgrading, your
settings in the inverter are kept.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
turns green.
Corrective maintenance
10.9 Upgrading the firmware
359