As you know, I'm having a issue with the HV 4MP cameras running FW v5.3.3 and my 7816N-E1 running v3.0.10. I believe I need to upgrade the NVR to a newer FW but don't want to lose its English interface. The rest of my cams are all 3MP with MTD hack to English or running Whoslooking ghost FW. All play well together in English except the 4MP which only shows the substream on the NVR.
So I think I should update the NVR FW to v3.3.4. If I use the Web upgrade I think the English interface will be preserved (I hope) and I think all the CAMs should be ok (no language mismatch). I have used your method to create a backup v3.0.10 FW with mtdblock2 and I exported my settings. So I *think* I can use the
TFTP method to restore the NVR should all fail (or do I need rs-232 u-boot access to restore?).
Any advice before I plunder the NVR would be appreciated!