| 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 |