Galaxy buds plus

I've had my Galaxy Buds+ since the beginning, back in 2020. I want to know if there is any software update available because I don't remember receiving one for many years.
The battery still holds a charge, but not like it used to. I think the left one drains faster than the right one, probably because I used it more often, as I used to wear just one earbud for calls. I haven't used them in a long time—for over a year.