GW Instek GDM-8261A Firmware Upgrade Manual - Manual (Page 3)

FIRMWARE UPDATE
3
7. Copy the firmware file “GW
GDM8261V105_A100_20120911.S19” to the new
removable disk.
8. When the file has finished copying over,
disconnect the USB cable and CAL key from the
DMM rear panel.
9. Reset the power on the DMM.
10. The new firmware will be seen during the
power-up sequence.
11. The upgrade procedure is complete.