help with radioland-china nrf52832 beacon

[blademckain]

hi guys, i bought a couple of these beacons

1. is it possible to reprogram them via a jlink?
   2)can you tell me a jlink to buy that is not too expensive?
   I would like to program these beacons with Mycropython or with Espruino.
   3)It's possible?

[nagelc]

Yes it is possible, using the SWDIO and SWDCLK pads.
I programmed one to operate with MySensors using a black magic probe, but the J-Link also supports SWD programming.
The tricky part is connecting to the pads. I just soldered on some wires -- not a very elegant solution, but it worked.

You can get a reasonably priced J-Link EDU from Adafruit:
https://www.adafruit.com/product/3571