Alternative ways to troubleshoot instead of just downgrade FW in case of issues

some facts:

• 1 thread, 8 answers, 4 from the same user (with no added value)
• there are at least 2 actual posts in other threads, where a factory reset helped
  https://community.netgear.com/t5/Orbi/Orbi-DNS-and-DHCP-and-NTP-Broken/m-p/2071538/highlight/true#M116852
  https://community.netgear.com/t5/Orbi/RBR50-2-7-2-104-firmware-Issues/m-p/2071667/highlight/true#M116882
• I have some minor mistakes in the opening posts and to clarify, I should add a final step

this part:

5. if step 3) does not help, proceed with the following steps
    downgrade the firmware
6. if issues are still not fixed, reset the router and do the setup as described in step 3)

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should be changed to:

5. if step 4) does not help, proceed with the following steps
    downgrade the firmware
6. if issues are still not fixed, reset the router and do the setup as described in step 3)
7. if issue still exists, try to find help here in the community

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As I cannot edit the initial post, I'm thinking about opening a new thread with the updated instructions.
And there I hope we get posts/answers which are related to the initial post.