1) there is no CH340, you do not need these drivers
With this controller the USB is directly controlled by the controllers MPU. If that is not running, USB will not function at all. (no serial, no sd card as drive on OS)
2) its a LPC1769 not a arduino.. it does not use ISP.
Do this only as a last resort!
Follow the smoothware method to install bootloader [
smoothieware.org]
You will have to find out where the boot and reset lines on the mpu go to an wire up switches. You will also need a 3.3v Serial-USB interface and plug it into TXD and RXD pins of controller.
3) All you should need to do is use an 3rd party sd to usb converter. and copy the correct firmware.bin onto the sd card.
then place sd card into controller and power up.
If the boot loader is working it will load the firmware from sdcard and then rename the to firmware.cur
Edited 2 time(s). Last edit at 05/07/2021 09:06PM by Dust.