@mungarinamanju If this router is provided to you by an ISP, that's the reason you won't find a FW for it. The only thing you could do to extend your wireless coverage is to use it in AP mode.

@punkrawkgeek I wouldn't know that - you have to search the forum about this option, but keep in mind that may void your device warranty:

@punkrawkgeek You're on the latest FW version for HW v4 in (CA) region.

@tpquestions Check this thread's discussions on that matter. Go through this FAQ to see the difference between Router Mode and AP mode (at the bottom of the documents this behavior is described as...

@Anupam_Dutta Check these threads regarding your inquiry: Can i use smartconnect and 5ghz mu-mimo at the same time ? Smart connect vs mu-mimo

@alxs The idea is actually to configure non-overlapping DHCP pool ranges on your main router and RE450. Thus, it shouldn't matter if a device gets its IP address from the main router or the RE450....