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3S
E-Class NVR
V1.0.0.0
How to Restore IOS for E-Class NVR
1.Insert the E-Class recovery USB into the USB drive on the NVR, then press the “Del” key during
the boot process to enter the BIOS menu.
After entering the BIOS screen, select the “Boot” tab, then set “Boot Option #1” to USB drive.
Click the Save & Exit tab or press F10 to save configuration and exit BIOS screen.
2.After NVR reboot it will detect the USB drive and boot to Windows 7 setup interface.