Didn't understand at all what you're talking about. I also have a "Portuguese" Switch on 5.1 firmware. Already been 3 weeks I'm using Sx OS, playing backups, updated games and installed dlc offline with Bayonetta Devmenu. No problem whatsoever what firmware you're on...
Updated to 3.0.1, mandatory to play Mario Odyssey because the update was on the cartridge itself, and it's the only game I want to play, almost all the others I could want I already have on Wii U. The other consoles on sale were at least 3.0.2 but their serials were not listed here, so they...
Serial:XAJ700147XXXXX
Serial on device matches serial on box: Yes
Region: PAL
Firmware: 3.0.0
Color option: NEON
Store: Worten (Portugal)
Was a bundle (if yes, which): No
Purchase date: today March 5th
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All the grey switches were at least 3.0.2 this one had the oldest serial I found...