Unless you had explicitly requested your store to install the C200 FW on the A200 when you purchased it, then someone must have "touched/used/played with" your (brand-new) unit before you.
I had learned previously that if I would like to be adventurous, I could cross-install the C200 FW to the A200 - but that should void the warranty.
Pero if you want to think positive, just consider it as an honest mistake "at the factory". 
Actually sir, it crossed my mind already that what I purchased was not brand new, only a refurbish one. But I would like to think otherwise. Sana nga nagkamali lang ng pag-install ng FW sa "factory". I couldn't have possibly made a mistake while updating the firmware because I listed the current FW before I did the update via USB so that I would know what FW to re-install if there would be a need to revert back to the original FW should the updated one will have bugs. Besides, it wouldn't have given me the message of "Cross-customer update is not allowed" if the current FW is for A200 since I was updating it with the new FW for A200. And I can't update it as well with a C200 firmware if the current FW installed was for A200.
Anyway, its all in the past now. What's important now is, everything is the way it should be. Besides, the shop confirmed to me that the warranty of the unit started only on the date of my purchase. I can live with that. I'm enjoying the my "new" A200 with the kick-@$$ NMJ. That's what matters most.
Thank you and regards.
