Is it correct?

Three yrs ago change my old Garmin Nuvi 250 for Garmin 54LM (Lifetime maps). For bigger screen and told it takes multi waypoints they lied it doesn't only takes one way point.
I couldnt change it as I had no proof. Anyone ideas how to get more than one waypoint on? Also
I'm told if I use the 54LM map update facility on the old 250 it will stop working or corrupt the 250 satnav is this true?
Many thanks
Bob UK, June 2016


done
Thanks Sorry but website doesnt work.

Bob UK, June 2016
This article...
http://www.gpsinformation.org/dale/waypoint.htm
Suggests 1000 way-points

Last updated April 2003 so things might have changed

I suspect Not Correct..., June 2016
link Click here to see other fixes for Garmin.