tjordan06

I just bought a used vehicle with an AVIC-Z110BT that has the original software (Version 1.00000). I have read across this website (which is wonderful) about firmware and map upgrades. I have found the downloads for map upgrades. I cannot seem to find the download links for firmware upgrades. Where can I find the links to download firmware upgrades (either 130 or 140, I do not know the difference)? Thank you very much! Tim