Maybe someone can review your router settings with you using Link> teamviewer if your interested. Its safe and secure.
I've just managed to update the firmware to the latest version which is 2.17.
When I had the 2.01 firmware version I tried to update to the 2.17 and I got the message "The chosen file is not a valid config file.".
So, I tried to update from 2.01 to 2.05 and the update was successful.
When I tried to update from 2.05 to 2.17 I got the message "The chosen file is not a valid firmware image file.".
That's because an intermediate firmware need to be installed first in order to upgrade firmware version 2.06 or lower to the latest firmware.I found out about this downloading different firmware updates from here:
ftp://ftp.dlink.eu/Products/dir/dir-600/driver_software/So, I downloaded this update:
ftp://ftp.dlink.eu/Products/dir/dir-600/driver_software/DIR_600_fw_revb1_215b01_ALL_en_20130430_instructions.zipAnd updated the firmware with the intermediate firmware update file and then updated the firmware to the 2.15 version with the file which is included in the same zip file.
And then updated the firmware to the latest version which is 2.17.
I think this information should be posted as a sticky because lots of people have come with this firmware update problem.
So I will test the router with this latest update to see how it goes.
If it keeps disconnecting then we could try TeamViewer to see the router settings, thanks.