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FAQ

How to recover your DS-4200 UHD & DS-2200 UHD?

Before executing NVR recovery, users need to make your USB device as a boot disk.

Please refer to: https://www.digiever.com/support/faq-content.php?FAQ=146

 

At PC


[Step 1] Download FW image file (dual_rootfs.img) from:

               https://drive.google.com/file/d/1mXU3-WjNptkpU3RuIU_8m7ZYuu9xl173/view?usp=sharing

               (Note: Default recovery FW is FW3.1.0.73-3.  User can update the FW after dual recovery.)

 

[Step 2] Copy FW image file (dual_rootfs.img) to the USB device that contains hk file.

At PC

[Step 1] Plug in the USB to the USB port in front of the NVR.

 

[Step 2] Press and hold the backup button, and then power on the NVR until the system LED and backup LED

              start flashing green.  Then, release the backup button.

 

[Step 3] NVR will start to recover automatically.

 

[Step 4] After recovery process finishes, NVR will shutdown automatically.

 

[Step 5] NVR will shutdown automatically.

 

[Step 6] Plug out the USB and turn on NVR, and user can boot the NVR successfully.

 

Tutorial video: https://www.youtube.com/watch?v=ua89MoYQszE