1000/100 plan, modem caps upload at 25

Hi, I got upgraded to the gigabit plan, and the plan description says 1000/100 speeds. SB8200 modem. I get about 950 down because all my equipment has gigabit ethernet, and I'm not interested in upgrading for the tiny boost to 1000. But my upload is still capped at the 25 that it's been at for years.

I suspect that at least in my market the gigabit bootfile is still capping the modem upload speed at 25 and that 100 is not actually possible. It is very consistently below that cap, it doesn't fluctuate. Can someone confirm this for me and save me the hassle of having a tech visit and tell me the same thing.