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Use 3.71’s Memory Stick Driver Under Custom Firmwares 3.80/3.90 M33

greg | February 14, 2008

Update: v2 of the patch is available…

  • Added to the installer the check of correct checksum of fatmsmod.prx. Use only encrypted or decrypted version of file.
  • Music, videos, etc now work.

Dark_AleX has released a patch enabling the memory stick driver from 3.71 on custom firmwares 3.80/3.90 M33. Why 3.71? Its fatmsmod.prx just plain old works better.

Instructions:

  • Use psardumper to grab ‘fatmsmod.prx’ from 3.71; encrypted or decrypted
  • Copy /F0/kd/fatmsmod.prx to the root of your memory stick
  • Copy FATMSPATCH from this package to /PSP/GAME and run it

Few things to note:

  1. it’s probably a better idea that fatmsmod.prx is encrypted because it’s compressed and uses less flash space
  2. fatmsmod of 3.71 usually works better because it has a better cache system, and usually reads on bigger blocks (sometimes 3.80/3.90 reads more data than needed — lazy prediction)
  3. however this driver uses more kernel memory, and it’s unknown if it will have any kind of secondary effect running this module in 3.80/3.90 — use at your own risk
  4. the lags in np9660 no umd mode won’t probably be solved, as that is a different problem

Download:
PSARdumper
3.71 FW EBOOT
3.71 MS Patch for 3.80/3.90 M33 v2

- source: dark-alex.org

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Comments (75)

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75 Comments »

Comment by lovehate
2008-02-14 01:53:33

Sweet!

Comment by Taver
2008-06-23 01:49:24

Will this fix my PSP (that is running on 3.90 M33) ’s inability to write new save files? Cause thats really pissing me off. If anyone knows how to fix that, please let me know. e-mail me at a_memory_better_left_forgotten@yahoo.com

 
 
Comment by sinwarrior
2008-02-14 01:59:21

so waht’s it do again? waht’s it’s purpose of existence?

Comment by Spelling corrector
2008-05-08 21:29:08

Learn how to spell what you faggot.

 
 
Comment by d
2008-02-14 02:30:14

it’s so we can have the normal/faster xmb speed of 3.71 in our 3.80/90 cfw, as oppsed to the “slower” and or “lagged” speed of 3.80+ firmwares.

i’m pretty sure that sums this patch up.

i haven’t done it just yet, has anyone tried it ?

if so, is there a noticable difference in speeds ?

i’m sure it does work, but i’d like to hear some feedback before i do it.

 
Comment by 0i8U2
2008-02-14 02:51:42

it works fine but be warned
you can’t see your videos,music or
pictures anymore
as far as fixing the mem stick lag
works well
“so do this at your own risk”

 
Comment by francisco
2008-02-14 02:56:06

my psp has bricked with this…

Comment by ...
2008-02-14 03:24:02

how? it doesn’t mess with the flash0/1. So, just delete the prx from your psp, and fix the txt file, and it should be fine.

Comment by JacobRV
2008-02-14 03:29:40

It’s not a plugin, it does write to your flash0. Have you done it yet? Because if you did you would know that. By the way, it appears to have semi-bricked mine too. I’m using the sleep-fix multi-ipl installed by upms. I’m still able to get into both recovery mode and the pandora menu. But the xmb won’t boot.

Comment by JacobRV
2008-02-14 16:30:52

Version 2 works for me! Just sucks I had to pandora back to fix it. Re-entering my static IP is a major pain. Yay DaX! He actually fixes things in a timely fashion.

 
 
 
Comment by joox
2008-02-14 19:57:17

full of bull!!!

 
 
Comment by Longhart
2008-02-14 03:12:26

Whoa this stuff is great,game speed is like before but like Oi8U2 said it will make your videos,pictures and music not work anymore make sure somebody create there flash 0 backup

 
Comment by Longhart
2008-02-14 05:08:13

For people who’s curious about my current firmware only!! psp slim 3.90m33-2,yes it does writes to the flash O,wonder if dax found the problem for MS patch 3.80/3.90m33

 
Comment by 0i8U2
2008-02-14 05:46:56

there is a version 2 of this update
at dark alex org and all works fine now
everything is awesome
3.90m-33-2 now smokin

 
Comment by BobBobingston
2008-02-14 08:33:24

I haven’t noticed any slowdown since 3.80 and 3.90, but if there’s a patch, I guess DA acknowledges it.

 
Comment by noob
2008-02-14 10:00:33

Please help me, Please teach me the step by step procedure. please someone provide the ‘fatmsmod.prx’ from 3.71; because i can’t manage to download the original 3.71.pbp because I have a dial up connection. thanks

Comment by Russian_man
2008-02-14 11:25:24

Only for you, noobie.
Download it: http://rapidshare.com/files/91799958/fatmsmod_v2
.zip.html Copy in same directory and install

It’s Version_2
Changes in v2:

- Added to the installer the check of correct checksum of fatmsmod.prx. Use only encrypted or decrypted version of file.
- Music, videos, etc now work.

Note: please read coments before installing

 
 
Comment by Russian_man
2008-02-14 11:31:21

Sorry linnk already dead try this
http://www.megaupload.com/ru/?d=HXP373PO

Comment by neonix
2008-02-20 08:14:50

thanks

 
 
Comment by Dr. Jesus H. Sukcokky
2008-02-14 11:54:02

As it appears, staying at 3.71 CFW is better than upping to 3.80 or 3.90 CFW which I will do…

Comment by Russian_man
2008-02-14 12:03:07

You absolutely right +1
Yeah If you Fat user.

 
 
Comment by mclambo
2008-02-14 15:11:14

Is this patch for the slim psp?

 
Comment by anthony82
2008-02-14 15:14:54

I’ll stick to my 3.71, There is nothing special about 3.80 or 90, Now if sony comes out with a cool new FW that enables you to use the PSP on the TV or something, or anything better then a Online Radio, then I will update to a new FW, until then, 3.71 is the best.

Comment by tacticalmobius
2008-02-19 21:01:36

get a slim it allows video out on your tv and with 3.90 you have skype functionality

 
 
Comment by SaNo
2008-02-14 15:29:18

fatmsmod v2 can´t read non-unicode :(

 
Comment by Orly
2008-02-14 17:25:00

Does this work for slim? I haven’t noticed any slow downs on plugins or whatnot on 3.90 M33-2

 
Comment by Brisket
2008-02-14 18:00:20

Thanks Russian_man for the megadownload.
After updating to 3.90 M33-2 my 4GB mem card could not be used at all (Formatted to fat16 to speed it up). I had to use my original 32MB one to apply this patch to get it working again. Now all iso and movies work as they did in 3.71 M33 on my 4GB card.

 
Comment by need4speed
2008-02-14 18:25:15

Does this work on psp slim?

 
Comment by DepheCt
2008-02-14 18:28:24

Before this patch I seen no problems, or slow downs on 3.90. I used and I still see no difference.
There also seems to be no one that can clearly explain what this is supposed to do… I keep hearing it makes the MS read faster, but where… on usb, in game?
It seems pointless atm.

 
Comment by yeowman
2008-02-14 19:14:27

ok fucking answer the question, does it work on the psp slim?? goddam, u see people asking so answer the fucking question dipshits.

 
Comment by Kratos
2008-02-14 19:15:20

Dont do it! it has alot of problems with mp3s and wma long file name even I used v2 but still no go:(

 
Comment by Kratos
2008-02-14 19:21:55

Yes the 3.8 and 3.9 fatmsmod.prx run ISOs with hickups but very smooth with 3.71 so that is why DA try to replace it with the one in 3.71

 
Comment by d
2008-02-14 20:46:33

i’ve read it does work on the slim aswell.

i think it’s worth doing if your MS is slow like most peoples in 3.80+

i’m going to do it later, can’t wait to see the speed difference.

full thread over at MC
http://forums.maxconsole.net/showthread.php?t=101073

 
Comment by Anthony82
2008-02-14 21:23:11

Why go through all this Fuss ? why not just stick with 3.71. What Great Almighty thing’s does 3.80 and 90 have to offer ?

 
Comment by Repo
2008-02-14 22:29:15

Use my dick Under Custom Firmwares 3.80/3.90 M33 DAX!

 
Comment by shiftry
2008-02-14 22:43:19

the slowness can be fixed by using error checking on the memstick, it fixed mine when i first got 3.90m33

 
Comment by oc
2008-02-14 23:15:40

before installing this… GTA wasnt working. But its working fine now after intstall :D

 
Comment by Longhart
2008-02-15 00:07:36

Can someone please upload the working fatmsmod.prx somewhere else not megaupload i’ve had problem with mega cause the slot for my country are full try sendspace

 
Comment by Longhart
2008-02-15 00:11:49

I will be very thankful

 
Comment by Longhart
2008-02-15 00:15:28

Sorry i had a connection problem can you guys upload the working 3.71 fatmsmod.prx to sendspace and other surver not megaupload

 
Comment by Orly
2008-02-15 00:28:04

I still don’t see any speed increase after applying this patch. Although it does give the impression of only workable on fatpsp and possibly on slim as mentioned above, it only really says it speeds up plugins for some users experiening lag when loading compressed files and plugins from the memory stick, an issue that did not exist in previous firmware releases so it says.

The patch allows users to load the original 3.71 fatms driver on 3.80 and 3.90 M33 series firmware, which if installed, will resolve this issue.

So basically increased memory speed with increased kernel memory. Another guy above mentioned 4gb not working after update… I use 4gb Sandisk MS PRO and still haven’t seen anything wrong. I think it’s solely for Phat users than Slim users since I myself use a slim.

 
Comment by Longhart
2008-02-15 00:34:09

I’m waiting for the fatmsmod.prx @orly if you have winning eleven pro evo soccer 2007 in cso format try to compare with the 3.90 with 3.71

 
Comment by 0i8U2
2008-02-15 01:00:05

this dose work on both psp fat & slim.
although not realy needed with slim but fat it is.
to me 3.90m-33-2 works as good as any other cfw.
have used all have both psp’s i have no problem with 3.90 at all there is some kick ass themes out now. no reason to stay behind skypes pretty kool as well thanks DA awesome

 
Comment by phil B.
2008-02-15 01:17:13

thank you dax

 
Comment by contagioncode
2008-02-15 11:17:19

Sorry,this patch is a bummer. Have tried both encrypted and decrypted prx files and still NO pictures,videos,music even after reformating MS. Cannot download content. Maybe has something to do with the NIDS when OFW3.80 came out. Back to CFW3.90m33v2 via Pandora. Goodby Yellowbrick PSP. Peace

Comment by 0i8U2
2008-02-15 17:25:19

did you use version 2 as i had this problem
with version1 but 2 is fine all music, video and
pictures are back and all is sweet
can now put cpu back to default runs smooth as

 
 
Comment by Russian_man
2008-02-15 16:19:14

If you foreigners dot’s forget! Via this patch all music & videos must’be rename on english. Onter languages doz not SUPPORT!
SoRrY fOr my BaD EngLiSh ))

 
Comment by PSP Defcon
2008-02-16 00:11:36

I semi-bricked my psp installing this. I thought I did the sets correctly, but I guess not. I do NOT have a Pandora battery nor the UPMS. Is there anyway for me to use the recovery menu to fix my problem or did I shoot myself in the foot?

Comment by Cha0s_Core
2008-02-16 00:19:54

Yeah … I did the same thing …. and when I try to fix it by putting back in the old fatmsmod.prx back in it wouldnt even turn on … but I did have a phat psp battery to unbrick it. if urs is screw up … try to make a pandora ms and when ever u get ur hands ona phat psp battery just pandorize it unbrick ur psp and just turn the battery back to normal. ….

ps; I know there no such thing as a stupid question but a stupid person that ask it … if I were to give u all the files in my flash0 and u use it to replace the ones in your psp flash0 would it work? just wondering

 
 
Comment by Ash
2008-02-16 04:05:09

you can downgrade through recovery. whats your firmware version first

 
Comment by danelectro
2008-02-16 04:57:09

works great! now vcs runs without hiccups on my sandisk 2gb(slim psp)

 
Comment by PSP Defcon
2008-02-16 12:46:56

My Version is 3.90 M33-2. I try to keep it up to date with the lastest CFW. I knew this might happen one day, but never got around to making a Pandora MS/battery. Looks like now I have no choice in the matter :-)

 
Comment by ZenoGia
2008-02-16 13:23:22

I have 2 psp’s one at 3.90 M33-2 and the other 3.80 M33-5 and I’ve noticed a difference in speed with games. Mainly with my TA-086 PSP (3.80) it cuts off on its own and sometimes the power button does nothing. I don’t see any speed difference with my 3.90.

Comment by Stiks
2008-02-16 23:11:03

great peice of work imo a must for those using psptube that save the vids to ms for offline watching.. i noticed though that it can actually slow down worse if you use the uncompressed version of the file for patch. best bet use encrypted no sigcheck you can really tell a difference running stage6 vids from ms

Comment by Stiks
2008-02-16 23:30:26

opps forgot to mention using a slim and this works fine on everything i run.. maybe with TM you could do the 2 different options. hold – on boot = 3.8/3.9 fatmsmod.prx, hold + on boot = 3.71 fatmsmod.prx. and always remember to expect a possible brick on every single flash write even the ones you have done hundreds of times (batteries can come loose, psp’s drop, ect.)

 
 
 
Comment by noobie
2008-02-17 00:11:44

my psp with cfw 3.90 m33-2 works very fast with this. just follow this procedure:
http://forums.maxconsole.net/showthread.php?t=101073&page=3

 
Comment by noobie
2008-02-17 00:14:14

i forgot to mention my psp is a slim type 2006

 
Comment by diablo
2008-02-21 01:04:11

HMMM had lags with 3.80 but no lags or glitches on my psp slim with 3.80 i think this isnt needed for 3.90 at all!!

 
Comment by diablo
2008-02-21 01:08:02

if you timemachine your psp you can use your pandora battery to boot to the xmb with your normal memstick no need to convert back anymore yay

 
Comment by player43210
2008-02-22 21:14:51

hey noobie…are you from spore? cause only spore sets have 2006 models for the slim

 
Comment by CypressCreekHighSchool
2008-03-05 18:43:25

Dark_Alex are you from CCHS,Orlando,FL???

 
Comment by an
2008-03-17 08:10:30

can you post another link of the file??

 
Comment by sean43206
2008-03-26 20:34:16

what is this file sopposed to do? can someone plz explain

 
Comment by MR.HUNGRY
2008-04-12 10:10:03

WERE CAN I GET HACKS

 
Comment by fat kid
2008-04-19 11:46:16

who has done this before? e mail me @ natilator@frontiernet.net. I also will need specific disclamers and step by step instructions

 
Comment by fat kid
2008-04-19 11:53:54

tell me soon. this will allow u to hak in games rite. i want to hak medal of honor heroes so if anyone wants to tell me that thtd b usefull

 
Comment by fat kid
2008-04-19 11:57:06

ps i have psp slim version 3.80

 
Comment by Jerome Monteecillo
2008-04-29 07:15:23

I’ve got a psp fat, version 3.30 OE-A that can read iso games. But there are other iso games that is can’t read. The games work because my friend’s psp can read them. How could I change this?

 
Comment by Maniveld
2008-06-14 20:00:22

i have 3.95 CF and i but fatmsmod and now my psp dont´t start normaly . then i turn on psp displey 10 seconds light and suhtdown .That i can do. Recovery menu working. Somebody help me

 
Comment by Butters
2008-06-30 01:04:52

Knock it off Spelling Corrector. You need to watch your potty mouth young man.

 
Comment by miko
2008-09-12 20:01:06

so angry. yet so funny

 
Comment by aBoOoOo
2008-09-24 19:26:27

how do i downgrade official firmware 4.05 on the slim psp to get custom firmware?

 
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