Thank you Furry.
I'm in Tucson, Arizona.
My DIR-655 A3 Router with V1.21 is working fine. It's never been a problem and we've had it over 3 years.
As you suggest, I think I'll leave well enough alone.
I thought I might be able to improve access to my network printer if I updated the firmware but we're able to get by the way it is. As we get newer devices we'll need a new router before long, anyway.
Thanks again.
DanlS