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Hi, all anybody,👋
I'm come form Hong Kong, I am a person who likes to music while driving.
In early, I bought a used Pioneer car audio (Old model of DEH-80PRS), But, Some of the questions it gave me were very upset. I hope solved some questions on this forums !

Questions following as:

1. How to check the making regions separately, does it have different functions in different regions?

2. verified, in Audio setting is have not Buttonholes function and Is there some switching mechanism at the bottom of the machine? these functions was watching on Google and YouTube

3. and whether can upgrade firmware solved this problem? but, if not buttonholes function, how can to upgrade by myself?

Thank you all frist❗❗
 
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