v4 Software for Lowrance HDS2

[willk]

I see that Lowrance have released v4 software for the HDS2 range. It seems mostly to provide functionality for autopilot and C-MAP. Has anyone updated their plotters with this version and where there any issues? I'm wondering if it fixes any of the minor bugs* in v3 and whether it's worth upgrading to?

*I've noticed that Autorouting graphics (the actual route on screen) can disappear at different magnifications and chart locations, e.g. when an Autoroute is generated, sections of the route may not appear in certain locations, at different zoom levels. They return when you find the original zoom level that the Autoroute was created in. Odd - and I'd like to remedy it.