Last week a friend of mine went to Singapore and then brought home a PSP for her kids. It was working great. All her games loaded properly. The sound was great. The controls were awesome. It was also fast.
However, after a week or so of playing it started to really slow down. It wasn’t just slow. It was really, really slow. The main menu of her PSP was so slow that the screen was sometimes flickering. It would take you about 5 minutes or longer before you can even go to the menu where you can choose and play a game.
If you even got to choose a game, loading time is impossible to bear. If for some reason you were able to wait (I tried sleeping), the gameplay was in slow motion.

Image Credit: Baby Turtle 023 by cygnus921
She brought it to a shop she knows and then it turns out that when she bought the PSP, it was already the cracked PSP and the configuration was all wrong. More so, what added to the situation is that her memory was full. Her memory stick had about 2 MB of free space.
WHAT NEEDS TO BE DONE:
1. Set “UMD Mode” to M33 driver NO UMD
The PSP firmware version was 3.71 M33 but is also tested with higher versions like 3.8 M33. These firmware versions should have the UMD mode to M33 NO UMD.
To set the following you need to go to the Configuration Page. To go there you need to:
i. Turn off your PSP
ii. Press and hold the R button. While doing that, slide and hold the power button up. This would turn on your PSP. You should hold until the black screen appears saying “M33 Recovery Menu Configuration”
iii. If the PSP just turns on to the normal menu, just repeat the two steps above.
2. Set “Use VshMenu” to Disabled.
It is also in the configuration page. Use the steps above and you should be able to find it.
Now after these two steps, if you continue no further, your PS would run faster – but only for the menu screen. The menu would be fast and really responsive. However, try playing a game. You would notice that loading is still slow and the gameplay is still played in slow motion.
Still Slow..

Image Credit: Speedy by me’nthedogs
3. Set the CPU speed to Default.
Now this is really important. The CPU may not really be used when playing music or in the menu screen but its very important when you play games.
There are two settings you need to adjust. Speed in XMB and Speed in UMD/ISO. For us normal users we just need to set these two to “Default”.
After this, your PSP should be running ok. However, I recommend that you do another step which would also help the performance of your PSP.
4. Free up memory from your Memory Stick.
You can do this using two methods. One, you could connect your PSP to your PC using a USB cable. Two, you could remove your memory stick and use a card reader. I prefer the second method but you may use any of the two.
Method Two: Remove your memory stick and use a card reader.

Image Credit: New Memory card slot by Jake of 8bitjoystick.com
Freeing up memory is easy, if you know what files to remove. As my friend is not really using her PSP for music and videos, majority of her files are game files. What she does is that she just puts games that she really plays. I recommend doing the same for your PSP.
Game files are located at the folder named “ISO”. The game files have a .CSO file name extension. You don’t need to delete them. Just transfer them to your hard disk. That way, when you want to play them again, you just have to transfer them back to your memory stick.
But if you have music and video files that take up much space, I recommend that you look into those first. Normally you would like to have at least 500MB of free disk space. You’d need the space for your game saves.
My friends have done the steps above with ease and have solved their slow PSP problems. Most of them, if not all, had to do all four mentioned above. The first three usually solves the problem.
 
 
 
 
 
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How screwy, thanks. I’ve been for weeks trying to fix my PSP on my own, attaching/reattaching the memory stick and such.
@Randomname: I hope your slow PSP problems are gone now.
Thanks! At last a solution for my slow psp!!!
Thanks a lot. At last my slow PSP resolved. You should try its work
5 STAR
thank u so much! it really solves my problem, i almost give but then i read your instruction and really helped me a lot! salamat!! Godbless!
Salamat at God bless as well mmbuzon!
My psp started acting strangely last night after I upgraded to 4.01 m33 and started using Remote Play. These steps seem to have fixed the problem. Thank you.
really liked the second option…it did work
thxxxx alot 4 help….had been searchin 4 a solution seen weeks…..my usd speed had been somehow set 2 20……
tnx for solving my psp problem!
heyeeee…..,
cul, i jst planned to sell my psp…..as i thought it got spoilt….tanx tanx tanx a lot…ur suggestions were really helpfull…
thanks for the advice my psp is working normal again for version 4.1
omg thx dude i thot my psp was broken and was like freaking out thx for saving me a lot of money
Thanks for sharing. My psp decided to go slow a lil while ago after i loaded some music on my card. Only the menu and loading time was slow however, the game play was fine. Now all is ok.
Thanks
Thankx dude…
i thougt my psp wz gone forever…
LIFE SAVE DUDE
thanks this happened to my psp i went to a shop and had to pay 50 dollars and the did not tell me how they did that thanks
It did not work
Sorry to hear that. I hope your PSP isn’t really broken.. You should take it to a Repair Center specifically to Sony to see whats wrong.
To all who have said that their slow PSP is solved, I’m glad I was of help! Thanks!
Thanks! my psp work great now!
thank you very much!!!!!! i was getting desesperate(not really) but a lil nervous thinking my psp was broken or something but after doing what u said it fixed right away so thxxxxxxxxxxxx
So you saved me what? about 170 bucks for psp, and about 100 bucks for the games and stuff I had downloaded on it. T-H-A-N-K Y-O-U
Glad I was able to help you!
tnx you helped me out !!! damn tnx so much. . .
tnx man…
tnank you im almost been worried thank god for you im going to save this site so if the slow motion is coming back
Thanks abigail! Glad I helped you!
To everyone I helped: Thanks as well and I’m glad I was able to help!
tyvm =]
my umd/iso speed wont change to default…need help
Can you change it at all? Can you set it higher than it usually is?
hey
i have the same prob
and no i cant change it at all
i cant even increase it or decrease it
hey
i hav finally set it 2 default but my gamez r still not workin + i cant do da last step cause dont no wat a card reader is and tat if u hav 2 buy it or wat?
plz plz plz help me n do reply soooooooooooooooooon
thank a lot i was able to fixed it
Thanx this site helped me not to bring my son’s PSP to shop. im worried since this morning but when i search in google i got this page, and now its working great. thanx so much.
Hey…at last i resolved my problem
CPU Speed for xmb and umd set to default…and it works fine
Thanks a lot for your aid it’s very useful….
Amazing this really works..
Thanks alot alot alot dude..I love you xD
I thought “the internet is such a great thing”.. thank you very much Ige .. *shakes hands*
Dear Friend!
Hello!
I’ve just done the steps & my PSP speed problem has disappeared. I am so thankful to you & I wish you the best….
Best Regards!
Behnam
Iran
Great!!!! Thanks a lot
yes
it did help
but i cant seem to reset UMD/ISO to disable
it is currently on 75 and no matter how hard i try there are no other options execpt for 75.
please tell me that there is a solution for my problem and do reply soon.
great job it was wonderful works now
i waited four months to fix this problem
and now i did it beacuse of you advise
this was great tips thanks
Hey Ige.
I tried all of the above methods, but my problem occurs when I install 5.50gen-a. Everything is working fine on 5.00 m33, but when I install 5.50 psp is just freezing on main menu. I went to the recovery, changed the vsh to disabled, but still freezing. Got any tips? Should I stay and wait for another more stable firmware (if so, I can`t play the newest games). Thanks in advance.
Then maybe it really is firmware. Maybe you should just wait for another one.
thank you so so much you guys are the best =]=]=]=]=]=]=]
THAT WAS SOOOOOOOOOOOOOOO EASY!!!!
i was gona flog my PSP on ebay coz i fort it was busted bt its lyke brand new agen!!!! forget wotevey1 else says coz this friggggggin works!!!!
Thanks I’m glad I helped!
Thank you very much for your help! I nearly given up and thinking of buying a new PSP. Cheers !!!
Thanks it really got me out of a bind save me trouble of getting it fix.
ur 1 legend m8 thnx so much (Y)
Thanks, great I helped.
my PSP’s version is 5.50 gen-b full….i tried your instructions…IT REALLY WORKS! hurray! no more lcd flickering and slowing down!
thanks you are n#1 the best
I cannot express my gratitude enough. You are my savior. Had I not seen this I would have probably discarded my psp altogether. Again thanks a lot.
thanks man, you are a legend
Thanks man. this is da best solution everr
thankz this worked a lot
Thanks alot for ur help!!!It works just fine now!!