9 years, 2 months ago.  This question has been closed. Reason: Duplicate question

MK20 usb interface firmware and bootloader

Hi, I try to change the interface firmware for my RBL_51822 board with the bin on the https://github.com/RedBearLab/nRF51822-Arduino/tree/master/mk20

1., both show 'mbed' on usb, (before I change it show 'RBL_nrf51822)

2. I try to drag bootloader.hex to usb, ...got error message said file is too large??

the board works good before I made the change with 2 bin files on the github, please tell me what's wrong

Bryan

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RedbearLab nRF51822 is an integrated "ARM + BLE4.0" development board. We have integrated Nordic nRF51822 with Freescale MK20 into a single mbed and Arduino compatible board. It is targeted for …