nRF52832 DK is bricked

[Aditya P]

Hi,

I’m working with an nRF52832 DK board that’s stuck in bootloader mode—LED 5 just keeps blinking. Here’s what we’ve tried so far:

• Held the IF BOOT/RESET button while powering the board on.

• Hooked up another, working nRF52832 DK’s “Debug Out” to our board’s “Debug In” and flashed a simple blink example (it worked).

• Used that same setup to flash j-link-ob-sam3u128-v2-nordicsemi-170724.bin.

• Only once did the board show up as a J-Link when we did the first step.

How can we get the board back to normal? Is it possible we’ve damaged the MCU or the J-Link interface?

Thanks,
Aditya P

[PaKa]

LED 5 blinking is often a sign that your USB cable is broken/missing cables.

What revision is your DK? Is the debugger a small QFN package or a large TQFP package?

Where did you program the  j-link-ob-sam3u128-v2-nordicsemi-170724.bin into? What connector did you use? If you actually programmed this file onto the debugger then the board is now trash and can't be recovered so importamt you know which port you attached to.