Programming nRF52810 with openocd and raspberry pi

Hello,

i have bought 3 modules from Rigado (BMD-330-A-R) with a nRF52810 SoC, is it possible to flash it with an Raspberry Pi? I read that SWD is possible by its SPI-Interface. I tried using openOCD with some patch from github for nRF52 series but there are several errors. 

I also heard about nrfjtool which could do the work but i cannot find it.

Best regards