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Can't upload firmware file D7800-V1.0.1.56 over V1.0.1.28 - Firmware file is incorrect.
I've just downloaded the V1.0.1.56 zip file, extracted the image file and tried to install it, but get the firmware is incorrect error. This box is not yet connected to the Internet, so can't try tha...
An update. When I put the D7800 on the net, I tried checking for a firmware update via the admin interface. It said there was no update available. When I went to write that up last night I wanted to get the error message correct, so did it again and it found 56! I asked it to fetch and install that this morning when it was quiet and all went fine, so I'm now running the latest firmware. I've no idea why these problems occurred or why it suddenly started working, but problem solved. Thanks for everyone's input.
Cheers.
The jump to D7800-V1.0.1.56 from V1.0.1.28. Is quite a few versions.
In the past, for some hardware Netgear has created updates that won't jump too many versions, probably an earlier update has done some serious work on the firmware that breaks the update process on older firmware.
You could try installing an intermediate version, somewhere between the two extremes.
I have no idea if it will help, but it is worth giving it a shot.
You could also try a reset before you apply the new firmware.
TFTP could be a great way of breaking the thing permanently. Proceed with caution.
An update. When I put the D7800 on the net, I tried checking for a firmware update via the admin interface. It said there was no update available. When I went to write that up last night I wanted to get the error message correct, so did it again and it found 56! I asked it to fetch and install that this morning when it was quiet and all went fine, so I'm now running the latest firmware. I've no idea why these problems occurred or why it suddenly started working, but problem solved. Thanks for everyone's input.
Cheers.