I found it yesterday while doing a Google search about the topic. I thought it was better to bring it up than create a new one about the exact same question, mostly cause it was never answered.
There isn't any negatives to updating your Joy-Cons unless you soldered pins 9 & 10 together. And the updates are applied to the Joy-Cons not the system which doesn't even matter since OFW and CFW are just modes.
No, what I said was the updates to the Joy-Cons are applied to the Joy-Cons themselves so they'll be carried over to whatever console uses them regardless if its using CFW or OFW. What many people don't know is that Joy-Con updates are not downloaded online; they are actually included in the firmware updates themselves. Meaning if you update the firmware offline such as with a homebrew application or game, the Joy-Con update can also be applied offline.
Pretty interesting. One would think that, being that the case, the joy-cons and other controllers would update automatically with every new system firmware update applied to the console.
Unless a joycon has been physically modified, updating them is completely safe and recommended. If a joycon's pins have been modified (which was a fad back when people didn't have jigs), it should be updated wirelessly.
Thanks for the confirmation. I updated my joy-cons last night in OFW and everything seems alright in CFW after the update.
