I've sorted most of my sapphire pro issues by uploading a custom firmware.

The chap who made it has some odd ideas about temps and i want to change a few of the default temperatures.

How do i update the configuration file ?

To change the firmware all I did was load all the files onto an sdcard and switch the printer on - job done.
But that isn't doing it for the edited cofoguration file.

I know I've had this problem in the past and just given up :-(

Surely this should be as simple as changing the firmware - or am I being stupidly optimistic - it is a version of marlin after all.
All the searches don't tell me anything about 32bit boards or just changing a few things in the configuration files.

I've managed to do a pid with the new firmware - bu again, until I can save the config file - can't update that either.

This is really annoying lol