Network Everywhere /Linksys NWR04B Firmware Older Version

I have a Network Everywhere / Linksys NWR04B Wireless B Router.
This model worked fine before the current version of firmware which is
labelled as version NWR04Bv1.02D1220 and dated Dec 2002 .
There seem to be other reports on the internet regarding the
flakiness of this version.
I am unable to find any older previous versions of this firmware.
As well Tech Support at Network Everywhere which now seems to have a
toll free number seemed clueless and unable to be willing to give me
anything but the lastest version which is online.
Anyone have any ideas ?

thanks