Wireless Joint

Have tried with MR6500-1A1NAS in my country where only n78 is supported and it does not work here.
Also MR5200-100EUS supporting both n77 and n78 does work, you might want to get this device if WiFi6E is not a MUST feature.

Sierrakeygen HOW-TO on Windows
1. Original information from https://github.com/bkerler/edl
2. Install git from https://github.com/git-for-windows/git/releases/download/v2.37.1.windows.1/Git-2.37.1-64-bit.exe
3. Install Python from https://www.python.org/ftp/python/3.10.5/python-3.10.5-amd64.exe ...

Understood, just hope that B.Kerler's action won't impact many users out there as they are not trying to get any profits from this keygenerator but self satisfied to unlock features under the hood for this device.

Netgear changed FW behavior which is preventing custom band selection, going through terminal is the only way at the moment

there is a tool, mrCONFIG at tinyurl.com/mrCONFIGTools, that can do the same as Telnet tool but more simple and convenient, you can give a try

For those who only needs sierrakeygen.py to generate unlock code for your Netgear devices, here is light version of sierrakeygen.py, renamed as sierrakeygen-mobile.py, which you just need Python installed on your platform and run this Python script directly. No more installation/setup is required ...

Verified MR6550-100PAS FW running on top of MR6500-1A1NAS is working fine, OPENLOCK/OPENMEP are all working with latest keygen.
No FW file from me, am just getting confirmation from mrCONFIG/mrUNLOCK user.

@moddermod
You are calling me out in public for not opening up my hard drive to you for anything you want from it?
Not cool at all.
let me explain something to you, I do this for a living, while your at work or sleeping or out with your friends or whatever it is you do, I am working every day ...