Ignore this. It doesn't need to be a hex file.Have you done this if the file is not hex?
In order to load new firmware on the instrument, you need to convert the file BIN b HEX. The BIN file is enough for me.
Thank you.
I will search my drives when I have the time to try and find the file I used to flash my 6933.
My one has v9.1 which I flashed some time ago.
It was quite some time ago when I last flashed mine.