RBR50-V2.7.6.6 firmware install issues

Do NOT attempt to open the file. Just use the web browser to navigate to where the file is.

Try Safari or Firefox browsers on Mac and load any RBS first using there web pages to load the file then the RBR lastly:

Procedure to Manually Firmware Update Orbi and Nighthawk Mesh systems. | NETGEAR Communities

Sometimes a file does not download correctly.  It cannot hurt to return to the Netgear site and download new copies of the router and satellite firmware:

https://kb.netgear.com/000070455/

Unpack the zip files to extract the *.img files for router and satellite.

As FURRYe38​ points out, it is highly recommended to update the satellite(s) first and update the router after all satellites are updated.

Thank you, both, but neither approach worked. Repeated attempts, including on a different OS, still showed a corrupted file. I also tried resetting the Orbi router and then accessing it through the browser. It tells me that 2.7.6.5 is the latest version and not 2.7.6.6 event though the app is telling me I need to update the router due to new version of the OS, and the related product support page states I need to update to 2.7.6.6. 

Apologies. I am on V2.7.5.6. I am supposed to be on 2.7.6.6 per Orbi app and Support page (except according to its browser interface).

I also have an RBR50 on firmware v2.7.5.6.  When I open the Orbi app (Android, version 2.51.0.5242) there is no mention of newer firmware.  Opening the web management system, the Firmware Update web page says, "no new firmware".  This is frustrating because Netgear released version 2.7.6.6 on Jan 13, 2026 with the vague description "security fixes".  This has been a common situation with Orbi firmware updates for the past nine years.  (new firmware is released but the app and web interface are not aware of it.)

In this situation, the only method to update the firmware is to:

• Download the zip files for the router and satellite to a computer.
• Extract the two *.img files from the zip files.
• Connect to the Orbi system and use the Manual Firmware Update option for the satellite:
  o This option can be found "below the line" on the router Firmware Update page, or
  o There is a Firmware Update item on the satellite web interface.
• After updating the satellite(s), update the router itself using the Manual Firmware Update option.

Thus, we seem to have two problems:

1. Your version of the Orbi app announces that new firmware is available while mine does not.
2. At some step in the Manual Update process, you see a message that the file is corrupted.

It would be tremendously helpful if you could make a screen shot of these two situations and paste them into this conversation.  Alas, for the past 11 weeks, any time a user attempts to paste an image into a conversation, an error message pops up saying "Try again later."  So, we are left asking you to please describe the exact step in the process where the message appears.

(and to confirm that the original downloads have been deleted and you have gone back to the Netgear support web page and downloaded the zip files again. and that you have tried a different web browser.)

Please check that firmware number again.  The RBR50 is a "special case" among Orbi routers.  A developer named Voxel created firmware for the 50 product quite some time ago and has been releasing updates (as recently as Sept 2025.  His firmware begins with "9" so Orbi routers will look at any firmware release from Netgear and think, "oh. mine is newer."  Voxel's most recent release was v9.2.5.2.42SF.  https://www.voxel-firmware.com/Downloads/Voxel/html/orbi.html  So, if your satellite has v9.2.7 that would not be from Voxel.

Was this satellite purchased separately from the router and other satellite?

The Forum has a mantra, "if it ain't broke, why fix it?"  On the other hand, it is a very good idea to have all units of an Orbi system on the same firmware.