Neogaf : Multiple reports of joycon issues in switch previews.

[SonytendoAmiibo]

sc94597 said:

SonytendoAmiibo said:

Nintendo can't just change the Bluetooth signal with a firmware update. The hardware has already gone through FCC testing and is licensed to operate at the current signal strength.

As far as I am aware there are two reasons why this does not necessarily have to be true. 

1. When one gets FCC certified there are certain modifications allowed which do not require recertification. 

 

2. It is possible to be certified for a range of signal strengths. 

Yes, Nintendo can get the Joy-Cons recertified if they have too. Or, like you said, they have a range of the signal already approved by the FCC. So there might be some kind of firmware update Nintendo can use to fix the problem. But that will shorten the battery life of the Joy-Cons.