Running nrfjprog gives me DLL error:
nrfjprog -f nrf91 --reset
ERROR: JLinkARM DLL reported an error. Try again. If error condition
Also tried through nrfConnect - Programmer - that also gives error:
2020-12-20T18:17:39.570Z INFO Using nrfjprog library 10.12.1, pc-nrfjprog-js 1.7.6
2020-12-20T18:17:42.382Z INFO Using nrfjprog to communicate with target
2020-12-20T18:17:42.713Z ERROR Could not fetch memory size of target devkit: Error: Error occured when get library info. Errorcode: CouldNotOpenDevice (0x4)
Lowlevel error: JLINKARM_DLL_ERROR (ffffff9a)
Finally, I found that my j-link programmer is version V8 and I would need V9 / V10, those support M33
I have ordered V9, will try to program my custom board once I have that.
Thank you so much!