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  1. A

    Hikvision - Clearing Passwords and/or Loading Firmware via TTL Serial

    I see there is a command for memory test: mtestall. Can I check the RAM with this command? If so, how to use it?
  2. A

    Hikvision - Clearing Passwords and/or Loading Firmware via TTL Serial

    It is a DVR DS-7204HQHI-K1/A. I've been using the recorder for several months, but recently I had a problem with it. Suddenly stopped responding, even after power reset there is no buzzer sound. In the TTL terminal (UART) it stops at "Starting kernel". When trying to upload a new firmware, I get...
  3. A

    Hikvision - Clearing Passwords and/or Loading Firmware via TTL Serial

    Hello. I am trying the method described here, but I have a problem. Error "cramfs.img checksum error" appears while uploading the firmware. Anybody knows what's going on?
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