I am not understanding the obsession with resetting the download counter. It does not void your warranty as it does not show why you put it in download mode. Here at a tech center I work at, we use Samsung official software to flash the original RUU and this requires us to put the device in download mode twice to run it.
Am I missing something? Please enlighten me.
P.S. Also, in the event that we cannot fix a device, we exchange it with the manufacturer and I have yet to see Samsung not accept a device due to the devices download count.