Originally Posted by HarryT
Looking at your device list, you should have at least two more microUSB cables lying around - those of your K3 and K4. Why not try one of those other cables and see if it works better for you?
The problem with those cables is that they too are cheap. A lot cheaper than the Kindle Fire's. They are not only a lot slower because they're designed for ebook/music side loading, but I have had about 100 files corrupted with it which is only fixed by trying to load the file 3-5 times until it works, or to load it within the device itself.