How to determine PSP Version from serial letter on the box

[Se7eN MasTa]

How to determine PSP Version from serial letter on the box

No Letter = 1.50 (North-American release) Confirmed
A = 1.50 Confirmed
B = 1.51 Confirmed
C = 1.52 Confirmed
D = 1.52 Unconfirmed (multiple version reports)
E = 1.52 Confirmed
F = 2.00 Confirmed
G = 2.01 Confirmed
H = 2.50 Confirmed


Thanks to E.T. From the Ausgamers Forums for this information
Edited by Se7eN MasTa

[Smok3 x3]

i had found this but for all the versions up to the psp lite and the slim but i cant find it anymore

[I Doughboy]

No Letter = 1.50 (North-American release) Confirmed
A = 1.50 Confirmed
B = 1.51 Confirmed
C = 1.52 Confirmed
D = 1.52 Unconfirmed (multiple version reports)
E = 1.52 Confirmed
F = 2.00 Confirmed
G = 2.01 Confirmed
H = 2.50 Confirmed

It is only for firmware 1.50 to 2.50

[Smok3 x3]

no there is up to the psp lite and firmware 3.71

no letter = 1.0 (Japanese Release) 1.5 (North-American Release) confirmed
A = 1.5 confirmed
B = 1.51 confirmed
C = 1.52 confirmed
D = 1.52 confirmed
E = 1.52 confirmed
F = 2.0 confirmed
G = 2.01 confirmed
H = 2.50 confirmed
I = 2.60 confirmed
J = 2.70 unconfirmed
K = 2.71 confirmed
L = 2.81 confirmed
M = 3.01 confirmed
N = 3.03 confirmed
O = 3.10 confirmed
P = 3.11 confirmed
Q = 3.30 unconfirmed
R = 3.40 confirmed
S = 3.50 confirmed
T = 3.51 confirmed

NP = 3.60 (PSP Slim & Lite Release) confirmed
NP A = 3.71 confirmed

there you go and there is pics an the site i got it from if you don't believe me