Sorry to bump an older thread, but I registered just so I can hopefully revive interest in this topic. I recently purchased a Swann DVR4-1425 and was rather disappointed to learn I cannot pull the feeds into any third party application (eg. Blue Iris). My network has existing IP cams and I was hoping to use a single viewing application for all of them.
That got me interested in what might exist for "rooting" the Swann or finding an alternative firmware to play with. The exploits for gaining root access via telnet from a couple of years ago do not seem to apply to this device, however the telnet port (23) is open, along with 85 (http) and 9000 (media). The bottom label lists the device as a SWDVR-41425H HIS.
Opening the box didn't yield much in the way of useful information. It's a small mother board with the hard drive mounted directly to the bottom of the casing. No recognizable markings on the board apart from "H2MB0_V130" with a date code from November of 2013 beneath it. Link to gallery of pics is below:
http://imgur.com/a/ulobv#0