BE WARNED! There are China dealers trying to sell old Cronus Device stock and passing them off as CronusMAX. We received various samples and most seemed to have been repaired by hand and the work was terrible with dry joints and bridge solder on the IC (see picture). Half of them wouldn't even work without some soldering repairs or replacement of components. All the serial numbers showed up as none CM and none of them will work with Gtuner or any of the GamePacks and none of them can be programmed to any new firmware or new features. Make sure you buy from a genuine retailer listed at controllermax.com/retailers If you have already bought one of these expecting for everything to work correctly then you have two options. Return it to whomever you bought it from for a refund or you can pay the ControllerMAX Upgrade fee of $29.99 available at our store. Source Team-Xecuter.