I dunno. I don't know what "the DBS problem" is, and I don't know what the firmware is intended to address. In general I do NOT upgrade unless I have a specific reason to do so, and I wouldn't do it while "the heat is on" either. From what you are saying it's annoying but seems like it was functional, so I would have left it alone until I got home.
There are lots of things that can go wrong with firmware upgrades, including the introduction of new bugs. The test and qualification cycle for incremental releases such as this are virtually never the equivalent of a new product. While there's also surely less code change, it isn't a given that progress is always monotonically upward.
For example, I never take OS updates for my phone while I'm on the road unless I have a specific liabiity that I just have to fix. I really can't do without my phone. I don't normally take an operating system update on my laptop either - they're among the worst, actually.
_____ Brian... a bicoastal Nikonian and Team Member
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