I try the last days very often to Recover my NRF52 Chips on NRFGO Studio 220.127.116.11.
Error: Unable to find or open the JLinkARM dll, Unknown Error.
I reinstall the Software many Times, set Regedit InstallPath.. Following other Solutions. but it would Work only 1 Time..
Now, i have a curious Trick.. i set the Chip in Recover Window to NRF51 and Recovery is Successfull with unknown Error.. Set on NRF52 Errors Again.
I Think its a Bug?
nRFgo Studio is no longer being maintained and it therefore might be outdated.
I recommend that you start using nRF Connect for Desktop and its application Programmer.