Check your Windows . If you see a yellow exclamation mark under "Ports (COM & LPT)", you need to install the CH340 driver.
If your device is working well, . FNIRSI firmware updates rarely add groundbreaking new features and carry a risk of bricking the device if the hardware batch is slightly different. Only update if you are fixing a specific bug listed in the changelog.
Hardware debug ports (SWDIO, SWCLK) are present on the PCB but not locked in production units. Using an ST-Link v2, we read the external flash via OpenOCD: fnirsi dsotc2 firmware
Before starting the flash process, ensure you have the following ready:
Change your USB cable. Switch from a USB 3.0 port (blue) to a USB 2.0 port on your PC. Re-run the driver installation file as an administrator. Check your Windows
Ensuring output frequencies match user inputs accurately.
Hold for about 2 seconds until a disk named appears on the computer. The screen should also display "MM Boot" in the lower-left corner. Using an ST-Link v2, we read the external
Avoid "charge-only" cables; you need a data-sync cable.