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Forum Discussion
orbi rbr860 firmware 7.2.8.5 img file is missing from Dec 2025 security release update file
I am running a 3 node orbi system. (rtr + 2 x satellites). The solution is running 7.2.8.2_5.1.18.
I am actually struggling with domain.local issues, but in looking for a fix, I noted a security release for orbi rbr860 so I downloaded it from the support site.
Having unzipped it, I noted there were only 2 files in the zip, which I thought was odd. (release notes and .chk file). I tried uploading the .chk file to the satellites to see what would happen and it failed as I expected. The error msg returned was "file not found (*.img)", so I assume its looking for an img file, which is not in the file from the netgear download centre.
Where do I get a complete version of the update and also, why does Orbi firmware auto update not update to this new security release version?
Thanks
-Anthony
5 Replies
Follow this to manually update the RBS first, then RBR lastly:
Procedure to Manually Firmware Update Orbi and Nighthawk Mesh systems. | NETGEAR Communities
The RBR860 FW file is present with in the .zip file for the RBR860:
https://www.netgear.com/support/product/rbk862
The RBR860 FW file is present with in the .zip file for the RBR860:
Yes of course - and that has a .chk file extension - not the .img file extension that AJW3208 was expecting.
Looking at the thread, I believe the error message was the result of trying to install the RBR (router) firmware on the RBS (satellites).
Having unzipped it, I noted there were only 2 files in the zip, which I thought was odd. (release notes and .chk file).
Not unusual - if you download the older 7.2.8.2 firmware, you'll also only see release notes and a .chk file.
I tried uploading the .chk file to the satellites
The satellite firmware is not the same as the router firmware - you need to download that from here:
You do need to extract the .chk file from the zip before uploading.
You could of course also use the check-for-updates feature in the web ui.
did you extract it prior to trying to upload it?
