This is release candidate 1 for software version 2.0
* save parameters in GUI
* .bin and .hex file support
* binary mode upload with packets of 128-512 bytes at a time
* Save to SPI works with any type of data range (any source file less than 128 bytes gets "padded" with 0xFF)
# ver 1.6g - Aug 2020 - Lunches GUI when no parameters specified (code contributed by John Gerrard)... requires PySimpleGUI module "pip install PySimpleGUI"
It's a "beta" version, so test and let me know if it works for you.