I wonder if you can share the result after the update, if you notice any different.
I just bought a ZPower system from eBay for my OPN 1s and I’ll be trying to update the firmware on the charger as well if it’s not already on the latest version.
Also, how have your rechargeable batteries been holding up? I heard about a lot of issues with the batteries failing only after a few months, instead of lasting for up to a year or more. I don’t know if that’s because of the bad programming in the charger, or bad battery chemistry that needs to be tweaked.