ch-flash

A program for flashing the CH573 devices.

this is a fork of with the notable difference that it will wait for the CH573 device to be connected if one is not connected already.

This has the benefit of not needing to "race the clock" when flashing the device because the CH537 (or at least the ones I have) have an unstable usb interface and will disconnect and reset after several seconds of being connected to the machine.

With this new utility one can run the flash program and then connect the device when it will be flashed.

udev

To flash the device requires some permissions to set up. One can run this flash program as root to flash the device, but for those who wish to keep the flashing under-privliged, one can add the following udev rules in /etc/udev/rules.d/50-ch573.rules:

SUBSYSTEM=="usb", ATTR{idVendor}=="4348", ATTR{idProduct}=="55e0", MODE:="0666"

Then run the command:

udevadm control --reload-rules