DS-6704HUHI-K unable to recover

Lospuad

n3wb
Joined
May 3, 2019
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EU
This is a video encoder that has had wrong firmware flashed to it (4.20.000). At first the web interface worked with frequent logouts, then it stopped working normally and beeps every minute or so.

TFTP is not successful. The device always sets itself to the previously configred static IP (10.10.10.205) and SADP can see it, but any attempt to change settings times out.

The device has a serial port, but have not been able to commuicate with it. Have tried two USB adapters, and two serial cards.

Have tried different PCs and configurations. Thought some days ago that 192.0.0.64 could be pinged for a brief amount of time before changing to 10.10.10.205 (which responds to pings intermittantly) but have not seen that address on wireshark.

An example of captured packets:

119 27.532949 :: ff02::16 ICMPv6 90 Multicast Listener Report Message v2
121 27.763028 :: ff02::1:ff0b:e98d ICMPv6 78 Neighbor Solicitation for fe80::5a03:fbff:fe0b:e98d
314 26.103981 10.10.10.205 239.255.255.250 UDP 1353 37020 → 37020 Len=1311
3647 476.837443 10.10.10.205 224.0.0.22 IGMPv3 60 Membership Report / Join group 239.255.255.250 for any sources
3646 476.818934 10.10.10.205 255.255.255.255 ADwin Config 142
4047 532.732563 10.10.10.205 239.255.255.250 UDP 1353 37020 → 37020 Len=1311
4055 533.009462 10.10.10.205 224.0.0.22 IGMPv3 60 Membership Report / Leave group 239.255.255.250
Not sure if directions for encoder identical to other devices. Have also tried other IPs for TFTP such as 192.168.8.128 and 172. range.
 
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