The short version is : pull power from the box, setup Z-modem to send the new firmware file, turn the box on. That's it -- no Tridge style hacking required.

For those of you who missed the BBS experience and skipped straight to the world of TCP/IP, in more detail I did

$ wget http://www.kristal.com.au/opentel/downloads/ODT4200PVR_A_KRISTAL_V202.zip
$ unzip ODT4200PVR_A_KRISTAL_V202.zip
$ stty -F /dev/ttyS0 ispeed 115200 ospeed 115200
$ sz -vvv -b ODT4200PVR_A_KRISTAL_V202.pgm < /dev/ttyS0 > /dev/ttyS0
[walk over to box, pull out of power point and put back in, it downloads software and reboots]

sz is in the lrzsz package in Debian.

Running strings over the firmware doesn't uncover anything extraordinarily interesting; anyone else pulled it apart any further?

Update : the latest release appears to be a semi-public 2.04 version which can be downloaded directly from Oznetics.

posted at: Thu, 29 Sep 2005 21:24 | in /linux | permalink | add comment (0 others)