From UNC20 to ConnectCore7U

I have old (but still in production) project created with UNC20 (NS7520) and NetOS 6.20.
I want to port it to ConnectCore7U using NetOS 6.20.
But the problem is that programming flash utility JTAGARM7.EXE (it is used during production) needs special configuration file for programming (hardware dependent file). And there is no such file for ConnectCore7U.
Where can I find such file for ConnectCore7U ? Configuration file for UNC20 doesnt work quite well (module is often reseting during startup).
Any sugestions ?