Jaycar Electronics DS-8704HI-S User Manual page 118

Step 2: After connection established successfully, you can press [Enter] on your
PC keyboard, [→] will show on the hyper terminal interface.
Step 3: Type "rebootDev" then press [Enter] on PC keyboard to reboot DVR.
Step 4: Press "ctrl" + "u" keys of the PC keyboard immediately when rebooting,
do not release them.
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