How to Update 41-CL

[cruff]

I went through the procedure to update my v2 unit today using a Suse Leap 42.2 Linux host. 63 images were out of date. It took approximately 3 hours to complete, with an interruption due to a TIMEOUT reported by the 41CL just over half way through. Could have completed sooner if I knew how to restart part way through without reading the presentation. Used a fresh set of batteries, didn't run them all the way down.

Thanks Monte and Sylvain for your hard work!