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3.4 Updating System Software
If the system software of the DVR needs to be upgraded, please take the following steps to safely
update it.
Important: Before carrying out the following procedures, please ensure the SD card is working
and the software system file on the SD card is intact.
1. Turn off the DVR.
2. Insert the SD card into the built-in SD slot on the front of the unit.
3. Press and hold the Up and Down buttons simultaneously, and then turn on the unit.
4. Keep holding down the buttons until the DVR sounds a tone and display the message “ XXXXXX
BYTES READ” Now the DVR is updating the system software, which will take approximately 90
seconds to process.
5. Restart the unit when the device sounds a tone twice and displays the message “ PLEASE RESTART”
The process is complete.
(If you have followed the procedures 1-5 and the unit is not able to power on, please check if the SD
card you are using is functioning and the file is intact. After this has been completed, start
procedures 1 - 5 over again.)
6. Verify the version of the system software. (Please refer to Section 5.6 VERSION option)
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A-rec T-recDISK
Power Display SetupSearch EnterMonitor Play Pause Stop
SD Card
Rec
Warning: Don’t interrupt the process while the unit is updating itself or insert an SD card that
contains no updated software. If these instructions are not followed, the system may
freeze.