AT+CFUN=0 is not confirned with "OK"

[Thomas Doess]

The nRF9160 v1.2.0 does not respond "OK" after AT+CFUN=0 !!!

2020-05-07T12:21:07.489Z DEBUG modem >> at+cfun=0\x0D\x0A
2020-05-07T12:21:08.489Z ERROR Error: 'at+cfun=0

[kk2mkk]

PR stands for pull request wrt GIT terminology, anyways I have built the latest hex file for serial lte modem corresponding to the above PR which o am attaching here.3073.merged.hex