LOL. I'm not sure what was so difficult to understand about that post. As I said, this was a few years ago. At that time all the major tablet makers were utilizing slightly different variants of the Android mobile OS. When you would be shopping for apps, you had to pay close attention to the reviews where the customers would reveal which OS variants worked best with which apps. The wrong combinations would result in glitches of varying severity. I purchased one game which loaded fine, but wouldn't launch at all. After several emails going back and forth with the developer, it was determined that my version of the Galaxy Tab fell into a particular manufacturing window that had some relatively minor flaw in its programming. Several months later an update was released that rectified the problem and the game worked fine from that point on. This was described as a firmware update. Whether that's accurate or not, I couldn't say. I can only tell you the terminology that was used. It was also the case that when I purchased this tab, Samsung had not yet developed their movie sales/rental site and the tab was incompatible with all the other movie sites such as Netflix, et al. I hope that gives you a bit of insight into some of the frustrations I encountered.