Dears,
new here, I tried looking up the information, but could not find anything. I have been told that early versions might have some issues with voice stability that were beyond fixing by firmware updates. Now I am looking to purchase a used one. Unfortunately the seller does not want to disclose the full serial number. It starts with 004 and then two more not disclosed. Can I infer from that part which of the revisions the unit might be?
Thanks so much!
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