Eagle E-M1DVR Operation Manual page 5

3.6 Power on the E-M1DVR then connect it to the co mputer.
3.7 Copy the datetime.dat file from your Windows desktop to the root directory of
E-M1DVR (it is recognized as "DVR" by computer.)
3.8 Disconnect the E-M1DVR from computer. Now the date and time setting is
completed.
3.9 To reset date and time repeat above steps.