Newer firmware version posted, but my R6300v2 router says none available

I know how to update the firmware manually. The question is should I? Is the newer version a correct version for my router?

I bought the R6300v2 (newer than the original R6300) in 2017. It has been a rock-solid home router for me ever since, the only router I've ever owned that doesn't need rebooting on a regular basis to keep working properly. I'm never in a hurry to replace something that's working well just because it's old. It supports a network of several gigabit ethernet switches connected to computers, servers and media players around the house, plus a dual-band WiFi network of mobile devices and dozens of smart home devices, with a wired remote AP. It doesn't support every advanced router function, but it has been remarkably problem-free.