Guide To PSP Downgrading

A Look At the BoxCodes and the OFW inside:
For the Phat Models:
A = 1.50
B = 1.51
C = 1.52
D = 1.52
E = 1.52
F = 2.00
G = 2.01
H = 2.50
I = 2.60
J = 2.70
K = 2.71
L = 2.81
M = 3.01
N = 3.03
O = 3.10
P = 3.11
Q = 3.30
R = 3.40
S = 3.50
T = 3.51
U = 3.52
Click to expand...

Slim & Lite:
(No letter) = 3.60
A = 3.71
B = 3.71
C = 3.72
D = 3.73
E = 3.80
F = 3.90
G = 3.95 / 4.01
H = 3.95 / 4.01
I = 4.01
J = 4.05
Click to expand...

The 3k models:
(No letter) = 4.20
A = 4.20/4.21
B = ?
C = 5.02
D = ?
E = ?
Click to expand...
 
sunil_geminian said:
kindly let us know which psp it is ????

u can put chicken mod {without pandora} & play iso games
Click to expand...

hey it is old PSP .... hacked before and i did a mistake and i upgrade it 5.03 ... now i downgraded it to 5.00 m33-6... using chickHEN r2

The problem is i can able to see the ISO files here but i cannot able to play them. If i start it it saying like "THE GAME COULD NOT BE STARTED (80020321)" Why is happing?
 
@^^

Did your PSP come with this firmware or did you upgrade it?

If this is the original FW then it cannot be downgraded. if the

OFW was 5.03 and below then you can downgrade it.
 
oh cool, then you can easily downgrade your PSP again.

just go to the previous page, there is a link posted for chickHen mod , by which you can downgrade your PSP without the need of a pandora. pretty darn simple if you ask me!

just follow the steps and you'll be done.

if you face any issues, do not hesitate to ask! :)
 
^ Which one to follow :ashamed:

udayrulz said:
Ok guys IF YOU HAVE A PSP WHICH CAN BE MODDED , you don't need a pandora battery any more . So you can install CFW from Original FW itself .

Follow the tutorial - Easy ChickHEN CFW installer (Without Pandora) Install CFW without a Pandora Battery, PSP Hacks - PSP Slim Hacks
Click to expand...

OR

Spacescreamer said:
First Rule:

Until n unless it aint broken... Dont Try to fix it..

I am myself on 3.90 M33-3 CFW and faced no problems as such.

Still if u want to.. i ll try to write a simple enuf step by step procedure:

Upgrade to 5.00 m33-6:

1) Grab the OFW (ver 5.00, file wd be called 5.00.PBP)

Link for the same: RapidShare: Easy Filehosting

2) Grab CFW (as mentioned before, u want to go to CFW 5.00 M33-6, so the file u seeking wd be 5.00 m33-6 ofcource)

Link for the same: RapidShare: Easy Filehosting

3) Extract the contents of CFW file (Rar/zip whatever it is) and place the OFW 500.PBP into the CFW UPDATE folder.

4) Place this UPDATE folder in your /PSP/GAME/ folder.

5) Run the M33 update from your games list on your PSP.

U r through.

EDIT :And before u do anything.. Do backup ur NAND data and put it somewhere safe.
Click to expand...
 
^^ Neither. Current ChickHEN R2 needs 5.03 OFW only. You can’t downgrade your PSP-3000 from 5.5+ to 5.03. If you upgraded to 5.5+ then sorry, there is nothing you can do for now! Wait for ChickHEN R3.
 
kchdeepak said:
hey it is old PSP .... hacked before and i did a mistake and i upgrade it 5.03 ... now i downgraded it to 5.00 m33-6... using chickHEN r2

The problem is i can able to see the ISO files here but i cannot able to play them. If i start it it saying like "THE GAME COULD NOT BE STARTED (80020321)" Why is happing?
Click to expand...

Changed UMD ISO mode in VSH menu.

m-jeri said:
Ok...
i pressed the select in the xmb menu and set the m33 vsh menu...and set the cpu clock to 333/166

UMD ISO MODE to sony np9660 and the iso's worked...
Click to expand...

Info was readily availble few posts before your posted.
 
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