At least for me I've not had much luck finding the proper MiniSD chip, downloading exactly the right files, loading them properly, etc, for a Meade LightSwitch firmware upgrade or reload. In addition to it possibly not working there's the risk of bricking the scope.
So I went with Opticstar's loaded and tested 1.6e firmware on a dedicated MiniSD card, $44 dollars at the current exchange rate delivered from England in 7 days. The accompanying documentation is excellent, you can really tell these folks worked out all the kinks and potential pitfalls and made you aware of them with the accompanying documentation. I especially liked that each chip is individually tested on a Lightswitch scope.
The purchasing process was easy and straightforward, the communications were spot on, tracking was clear, absolutely no issues at all. And yes, the firmware upgrade on my LS6 went from 1.6d to 1.6e without issue.
As a hard to find MiniSD card can be in the $20 range it was a no-brainer for me to spend the extra $24 to avoid all the potential hassles.
I can't recommend this solution enough.
PS: I have NO affiliation with Opticstar other than being a very satisfied customer.