I've got a Circuit Express Bluefruit (blue board).
I got no reaction when copying a new bootloader version to the CPLAYBTBOOT-folder.
So I might have gotten a little too eager. I read on https://tinygo.org/docs/reference/micro ... bootloader that I needed to use the adafruit-nrfutil tool to upload the bootloader. Which I did with the following command and output:
Code: Select all
j-mpb-m1 ~> /Users/jorg/Library/Python/3.10/bin/adafruit-nrfutil --verbose dfu serial --package Downloads/circuitplayground_nrf52840_bootloader-0.7.0_s140_6.1.1.zip -b 115200 --singlebank --touch 1200 -p /dev/tty.usbmodem11201
Upgrading target on /dev/tty.usbmodem11201 with DFU package /Users/jorg/Downloads/circuitplayground_nrf52840_bootloader-0.7.0_s140_6.1.1.zip. Flow control is disabled, Single bank, Touch 1200
Touched serial port /dev/tty.usbmodem11201
Opened serial port /dev/tty.usbmodem11201
Starting DFU upgrade of type 3, SoftDevice size: 151016, bootloader size: 39000, application size: 0
Sending DFU start packet
Sending DFU init packet
Sending firmware file
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Activating new firmware
DFU upgrade took 20.13381600379944s
Device programmed.
Fingers crossed that I haven't bricked it and that there is something to be done. You are my only hope!