Thank you all sorted but can you add more packs without deleting the factory installed
again thank you
Yes, but not the first time. If you want to add to the factory installed packs, you need to download those "factory" packs from the Yamaha website and load them into YEM. Then you can create a new pack that combines them with any others.
The 'quick install' option actually only knows about the last pack you created on YEM. It doesn't know what's currently on your keyboard. So if you haven't installed any packs through YEM before, the first one needs to be a 'full' pack so YEM has a known starting point.