Every time I change something with software do I have to write to the radio? Shawn March 07, 2017 20:46 Yes, that's correct. Always read from the radio first, make the changes that you wish to and then write to the radio. Related articles I programmed my radio and lost channels i have the radio sr955hpc looking to get software ... Where can I buy the programing cable (USB Cable)? Programming Software Setup Help Video Drivers for Windows 10? Comments 0 comments Article is closed for comments.