Trust me, wherever you buy the Switch in Germany it would most likely ship with 3.0.1 firmware, especially if you go for the Neon Red/Blue or Grey version, and new shipments of Mario Odyssey will come with 3.0.1 (from my own experience). I bought the switch three times and returned it back (retoure) within 14 days and yes, I bought on amazon.de aswell and no luck (3.0.1). Sellers on ebay etc. are just ignoring any questions regarding the "serial number" and "switch firmware/software version". BUT a couple of days ago I bought an "old" Switch bundle (Splatoon 2), that was my fourth Switch and finally it shipped yesterday with firmware 2.1.0 (proshop.de).
Your best bet is the Splatoon 2 bundle, im not saying proshop.de is your only choice but I bought there (yeah, a little bit overpriced but the job done here). One of the reasons why there, it would be suspicious to return the same product twice to the same store.
BTW and just as promised, I will start a "Splatoon 2 GIVEAWAY" in a couple of days (DOWNLOAD CODE) , simply, I have no use of it (im required to update my console to the latest firmware to be able to download and play the game, BIG NO NO for me). I will inform you all prior the giveaway (in this thread and in "Splatoon 2"), I will not start it randomly.....
So, here is my report, fellas.......
Serial: XAJ4001268****
Serial on device matches serial on box: Yes
Region: EUR (Germany)
Firmware:
2.1.0
Color option: Neon Red/Blue
Store: proshop.de
Was a bundle (if yes, which): Yes, Splatoon 2
Purchase date: December 07. 2017