. Just a note regarding CHIRP. The UV5X and UV5X_GMRS are two totally different radios. While the UV5X is CHIRP compatible, the UV5X_GMRS is not. Having upgradable firmware may delay CHIRP support as every time they come out with a firmware update, they would need to backward engineer it. Here are pictures of the 2 different models. https://www.miklor.com/COM/Review_UV5X.php