I am using a usbtinyisp external programmer, supplied by Sparkfun, to upload.
This works fine for my other boards such as the Freetronics Eleven, which uses a Mega328 28 pin chip.
But there is an error using the programmer with the Wiring S Board.
It is fine using boot loader.
I have changed the preferences.txt file - second last line, upload.using=boot loader or usbtinyisp, whichever way is used. I use V23 for the mega328.
Operating system is Win7.
I think the problem mignt be the driver file as i dont have a specific one for this Wiring S board and use the 64bit driver from Adafruit. It is very likely that the 64bit driver I am using for the other AVRs is not compatible with the Wiring S board.
Has anyone attempted this method of external programming?