GE Multilin DGT Series Instruction Manual page 56

FIRMWARE UPDATES
Firmware updates
Updating the DGT-R firmware
Updating the DGT-U and DGT-D firmware
6–52
Please contact GE Multilin for information on DGT-R firmware updates.
Please contact GE Multilin for information on DGT-U and DGT-D firmware updates.
DGT DISTRIBUTED GENERATION TRIP CONTROL SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: TROUBLESHOOTING