Do you have that software running on any other dsp card in your network? If so (I'm guessing you know this already) you can load it from one of those cards. Todd -----Original Message----- From: usr-tc-bounces+berto=core.com@mailman.xmission.com [mailto:usr-tc-bounces+berto=core.com@mailman.xmission.com] On Behalf Of Shahrooz Sharghi Sent: Monday, December 12, 2005 1:31 PM To: Discussion relating to the 3Com/US Robotics Total Control modemsystems. Subject: [USR-TC] hiper dsp software Hi, I need Hiper DSP E1 ISDN Firmware old version 2.x.x I have upgraded my dsp to latest version "3.5.13" but almost of my dialup users disconnect after a short time, I want to downgrade it to same firmware it had before but I don't have it. Regards Shahrooz Sharghi