Definately buy aire books they are reliable. We have France North and south but need the Spanish and Portugal aire book. For Spain and Portugal we use search for sites at the moment and we have always found an aire without any problems. Aires can be free or anywhere up to 15E with facilities.
You can walk into town from villamar. No dogs allowed though, so nono if you have a dog. Toretta across the road great for dogs and good if it doesn't flood. Raco a bit further up good and dog friendly. Bus outside.
The update is either flat sat or flat sat easy. 1st or second update from the link.
When you find the correct one it's easy to do with a laptop and printer cable. There's a YouTube video which shows you.
Left side panel. Panel closest to back of the van. From G3 Residence room. Was a spare from Rose Awnings. Fits coach built motorhome. These are more than £500 new grab a bargain. As new and clean, still in box.