. Specifically, for the GP "Professional" series (which includes the GP320, GP340, GP360, and GP380), you generally require the EMEA Professional Series CPS (often referred to as Functionality:
To the outside world, a GP340 was simple: push the button, talk, listen. But Marta knew the truth. Inside each yellow-and-black casing was a silent civil war between a brilliant, obsolete operating system and the crumbling firmware that ran on it.
If you maintain a fleet of 10+ GP340s, investing in the official CPS is worthwhile. If you own just one radio for personal use, consider selling it and buying a modern, USB-programmable radio like the (digital) or a Baofeng (though quality differs vastly).