capof

I just received a new DH-IPC-HFW2100S V2 from aly express, but this camera is not working from the beginning. -Config tool doesn't detect the cam. -it was pinging, but web interface was not working, port 80 not listening... -then I telnet into the cam, kill /util/upgraded, and lanch it manually, and try to lanch an upgrade from config tool, but the upgrade immediatly failled because /mnt/mtd/Config/passwd was missing. Then I find an other passwd file in an sub folder of /etc, so I decide to copy it into /mnt/mtd/Config/passwd, then reboot the cam. Now When I Telnet, the cam refuse 7ujMko0admin password, so it's look like I have made a mistake... ttl is maybe the solution, but after opening the cam, I don't find connector like the picture from the first page. Any Idea ??