However, I must use a memory stick, rather than an SD card.(of course my module has a user USB connector)…is there a companion link for this approach?
I have made one that does this using 4.1 several years ago and generally works well (though it takes a few gyrations of redefining the system memory space to get there). Now that I am using 4.2…wondering if there are any newer/better procedures that have evolved?
I also used to update with usb however usb stick can be removed by enduser at any time during the process and even if there’s checksum mechanism we have prefered to first transfert from usb to sd and then update from sd. We also do the same with Eth. We transfert first the files on SD using FTP and then we update from SD.