Hi,
Today I found I was unable to flash my nRF9160 DK. "west flash" fails with the error message "Installed nrfjprog is too old for the device. Please upgrade nrfjprog to a more recent version". I had no issues yesterday with nrfjprog v10.4.1. I see you released nrfjprog v10.5.0, but the release notes mention nothing in regards to the nRF9160. I updated, but am still unable to flash my DK. I'm running Ubuntu 18.04.
Considering no relevant changes were made to the nRF9160 with the nrfjprog update, why do you require the lastest version? Everything worked perfectly with v10.4.1. I don't even understand how v10.4.1 magically broke overnight.