I got a Clip+ about 1-1/2 years ago and installed Rockbox. It's worked fine since. However, I finally checked on updates and would like to update to the latest 3.13 build. I have the 3.13 build dated 3/5/2013. I downloaded the latest 3.13 build dated 2/7/2015 and tried to install it manually. I tried to both unzip it directly to the Clip+ root directory and unzip it to my hard drive and copy it to the Clip+ root directory. In both cases it just sits there and never copies.
I then downloaded the latest 1.4.0 Rockbox Utility and tried to install it that way and it just fails. USB is set to MSC. I can read the contents of both the onboard memory and the microSD card. My computer is a Windows 7 PC.
I considered trying to delete the .rockbox file from the Clip+ and then try to copy the new one to it, but I'm afraid that I might really screw things up.