Firmware is 6.01 and can be up-graded but to have to know how to do it.. That’s why you need to be a CERTIFIED TECH to work on installing this to get the sequence right and that’s where most techs screw-up.. I had it tested and works great like all my parts NEW or USED. Yes as you see it does comes with a key which it is taped on the panel as you see in the pictures. All my stuff is tested new or used. All my auctions are GUARANTEED.. !!! I have a large amount of New and Used parts that are all hard to find parts for a lot of different systems Systems… I have a large number of All AutoCall CD XA, Merlin, Thorn, Grinnell, Simplex, Edwards, FCI, Gamewell, Silent Knight equipment available! I will leave feedback when i receive feedback from you. I hate to do this but 80% of the people don’t leave feedback. I only ask a few things from you. If you have any questions about an item “ASK”. I usually will get back to you within a few hours. I will NEVER take longer than 24 hours to respond. Just contact me and I will respond within 24 hours. OH YES I HAVE BLOCKED NUMEROUS EBAYER’S FROM MY LISTINGS SO IT IS THEIR LOSS.
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