A legitimate 4D blue programmer works very well and comes with very detailed use instructions, including charts of the proper keys to use with each vehicle. This device is not for adding spare keys, it is for resetting the ECU when all keys are lost. There are Chinese knockoffs being sold on Ebay that will damage the cars that they are used on, requiring very expensive repairs. I would bet you have the knockoff since you don't appear to have the paperwork that is included with the legit tool. At first, the knockoffs had an orange case, but the current ones are blue like the real one. If you paid under $600 for it, beware!
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