New Switch Back of Cart Serial Format

[rarenight]

FYI, Nintendo just introduced a new serial format for the back-of-cart serials in their latest-produced Switch carts. This is a simple informational topic for anyone working on Switch. Thanks to @Prominos and @ppltoast for working this out with me on Discord. FYI @BumpFi @SonGoku @jhmiller @ChuckD


Old-style Serials:
Zelda Echoes of Wisdom Rev 1:
BDGEA08X001
11112334555
1 = Product Code (BDGE)
2 = Build (A)
3 = ??? (08)
4 = Chip Manufacturer (X = Lapis)
5 = Revision (001 = Rev 1)


New-style Serials:
Zelda Echoes of Wisdom Rev 1:
BDGEA60A014YF
1111233455678
1 = Product code (BDGE)
2 = Build (A)
3 = ??? (60)
4 = Chip Manufacturer (A = Macronix)
5 = Revision (01 = Rev 1)
6 = Manufacturing Year (4 = 2024)
7 = Manufacturing Month (Y = November)
8 = Manufacturing Day? (F = 15th?)


For reference:

Chip Manufacturers:
A = Macronix
B = Macronix
S = ???
X = Lapis
Y = Lapis

Manufacturing Years:
4 = 2024
5 = 2025
6 = 2026

Manufacturing Months:
1 = January
2 = February
3 = March
4 = April
5 = May
6 = June
7 = July
8 = August
9 = September
X = October
Y = November
Z = December

Manufacturing Days (not confirmed until we have more evidence):
1 = 1st
2 = 2nd
3 = 3rd
4 = 4th
5 = 5th
6 = 6th
7 = 7th
8 = 8th
9 = 9th
A = 10th
B = 11th
C = 12th
D = 13th
E = 14th
F = 15th
G = 16th
H = 17th
I = 18th
J = 19th
K = 20th
L = 21st
M = 22nd
N = 23rd
O = 24th
P = 25th
Q = 26th
R = 27th
S = 28th
T = 29th
U = 30th
V = 31st

If we are incorrect about any of these details I'll make additional updates on this thread. Just thought you all should be aware.

[rarenight]

Note, my Switch cart submission tool: https://github.com/rarenight/no-intro-s ... ssion-tool will need to be updated to support this new format.