I have DIR-615 B2
Supposedly this router has a auto check feature which never worked. It's sad that I just realized it after almost 2 years. So it keeps saying:
Current Firmware Version : 2.20
Current Firmware Date : 2007/05/30
Latest Firmware Version : 2.20
Well current site says laters is 2.25. Very well!
But that's not my problem. I downloaded firmware, 2.25 and connected to router over wired connection. When I try to upload, it tells me this:
"Upload Failed
The uploaded firmware file may not be correct. You may have uploaded a file that is not intended for this device, or the uploaded file may be corrupted.
If the uploaded file is correct, it is possible that the device may be too busy to properly receive it right now. In this case, please try the upload again. It is also possible that you are logged in as a 'user' instead of an 'admin' - only administrators can upload new firmware.
The Gateway will not be reprogrammed. "
I know that file is correct, I downloaded many times, using different browsers, same thing. I also tried 2.21 in case it would fix any incompatibilities but it did not work either.
So what am I doing now?