I've old Nanos that to program (upload) with Arduino IDE I have to select "ATMEGA328P Old Bootloader". The programming is via the standard Nano USB cable, and I need the CH340 driver under Windows 7.
With mblock (ide) I've selected the nano device package, but when I go to program the nano with the scratch program, the COM port is available, but the device is never found. I suspect this is due to the old bootloader. Is there a way to make use of the old bootloader under mblock?
[At this time not looking to re-flash my Nanos with a separate programmer.] TIA.