e: i looked and there’s only v1 and v2 and they’re both supported by openwrt. you can use the openwrt alternative router firmware to enable many more options and abilities. your router is dual firmware too, so it’s possible to keep the old one installed in case you wanna jump back to it.
you can (when you feel like it) make your router into a real-ass linux based gateway router that does all kinds of crazy shit like lets you use SMB2 and up to access files shared from it and other things