Blink.ino.elf.uf2 Download
Nehueln Guarno
My two new RP2040 Nano Connects crash when I load blink.ino.elf.uf2. Nothing happens, Crickets ... No flashing LED, No USB connection to my PC. I must connect QSPI_CSn to ground to gain access to the Nano Connect.
6.3.0 and blink.ino.elf.uf2 ran/run fine on the Nano Connect I received from you over 6 months ago. They do not run on the 2 Nano Connects I received a couple days ago. What was changed to cause this? How do I/we/you fix the issue.
You could surely make a new blink.ino.elf.uf2, but it doesn't seem like there is much need for one when you can just upload a Blink sketch from the IDE when you want one on the board. It sounds like the latest CircuitPython file works fine with either chip. So it doesn't seem like there is actually anything to fix, but certainly it's a perplexing problem if you don't know about the different flash chips.
I received a board back in June but I haven't gotten to use it until now. It was blinking with the built-in blink program when I received it but ever since I tried to upload a sketch to it from the 1.8.13 IDE with the latest MBED OS RP2040 core I can't get the board to do anything except the GND/REC reset. I've tried both the 1.8.13 and the Beta 2.0 IDE with the new MBED core and also Platform I/O. I can get a program to upload to it but it doesn't work (blink example) and I have to use the GND/REC to reset the board after that. The "factory reset" blink.ino.elf.uf2 doesn't work either as well as the flash_nuke.uf2, I can't seem to get the board to do anything now except reset (load sketch and hang). And ideas of what to try to "fix" this board?
Factory Reset
Factory reset should be carried out if all the previous corrective steps above fail to get the board to work properly or if the UF2 image got corrupted after firmware or sketch upload. To start this process, double-tap the reset button or connect a jumper wire between the REC and GND pins, this will open a mass storage folder. Remove the jumper wire while the mass storage folder is still open, then download blink.ino.elf.uf2 file from here. Drag the blink.ino.elf.uf2 file into the mass storage folder, if successful, the board will be flashed with a program that blinks the built-in LED, and shifts between the red, green and blue pixels.