CANNOT FLASH softdevice into NRF51822 WITH NRFGO

[Fenglong]

I've been working with writing and erasing flash. And somehow I can't flash softdevice 6.0 into the NRF51822 G0 chip with NRFGO. The error information poped up is "An error condition was detected in the JLinkARM DLL".

Still I can erase the whole flash with NRFGO.

My NRFGO is 1.16.0.3031

Based on the previous discussion related to this topic, I also tried typing the following in the J-Link commander. But still doesn't fix it. " r w4 4001e504 2 w4 4001e50c 1 w4 4001e514 1 qc "

[Hung Bui]

Hi Fenglong,

Most likely you have a large capacitor connected on the VDD that requires a long discharge period. The device won't enter brownout reset mode until the supply voltage drops below 1.8V.