Thank you for the procedure, though I am a bit reluctant to disable the SIP installed in the OS....I am not suggesting that there is some malware in CHIRP nonetheless the possibility will always be there.
Lets assume I disable the csrutil to allow CHIRP to work, if I re-enable csrutil after I have run CHIRP, will this action prevent me using CHIRP again or will the OS remember that csrutil allowed CHIRP earlier on?

Looking forward to suggestion

73's