I always read the new HB software release descriptions to grade the value of updating my 1197/998 units.
But HB descriptions leave alot to be desired. They release undocumented code changes.
I ALWAYS SAVE ALL SOFTWARE RELEASES on my home computer in case I must fall-back to my previous version.
But I upgrade almost immediately, then view and test my HB units in simulator and on-the-water for glitches.
Would be safer to wait 3-4 weeks after a release and search forums or "Google-for" problems.