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Instructions. Yes more instructions, but these are much simpler. Make sure you’ve installed the 5.00 M33 firmware before processing otherwise you’re going to cause yourself a lot of headache.
- Extract the patch you want to install to your computer.
- Copy the Update folder to X:/PSP/GAME/ on your PSP’s memory stick.
- Run 5.00 M33-X UPDATE from under Game on your PSP’s XMB
- After all process is complete, press X. Your PSP will reboot.
- Congratulations, you’ve just installed 5.00 M33-X
Do note that X means the patch you’ve decided to download.
5.00 M33-6
Changes includes those from subsequent patches:
- Fixed a bug that made unbootable PSP without memory stick or with a bad one.
Download: 5.00 M33-6 | 5.00 M33-6 (Rapid Share)
5.00 M33-5
Changes includes those from subsequent patches:
- A setting has been added to recovery, that, when enabled it may increase memory stick reading speed. (only on the psp, not in the pc).
- By default it is disabled. If you installed 3.71 fatmsmod, do not use this setting, as its performance with 3.71 driver has not been tested. Instead, reinstall 5.00 m33-4 using dc8 and update to 5.00 m33-5
Download: 5.00 M33-5 | 5.00 M33-5 (Rapid Share)
5.00 M33-4
Changes includes those from subsequent patches:
- Speed selected for umd/iso was not properly locked in some new games that used scePower_EBD177D6 instead of scePowerSetClockFrequency to change speed.
- UMD/ISO speed settings now apply to PSN games too.
- Fixed libupdown.prx connecting to dark-alex.org instead of sony when npsignin_plugin checks for a new version and m33 update is enabled.
- Iso file descriptor was not closed in driver deletion
- Added a shutdown command to vshmenu.
Download: 5.00 M33-4 | 5.00 M33-4
5.00 M33-3
Changes includes those from subsequent patches:
- A bug was introduced in 5.00 M33-2 that made some games and homebrew not to work
- PSN version check is now automatically bypassed without need of touching any setting
Download: 5.00 M33-3 | 5.00 M33-3 | 5.00M33-3 (RapidShare) | 5.00M33-3 (MegaUpload)
5.00 M33-2
Changes includes those from subsequent patch:
- A bug was introduced in 5.00 M33-2 that made some games and homebrew not to work
- PSN version check is now automatically bypassed without need of touching any setting
Download: 5.00 M33-2 | 5.00 M33-2 (Rapidshare)
If you encounter any problems or need some help or need to clear somthing up, post a comment.
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Tagged with: 5.00 Firmware, Custom Firmware, How to install 5.00 M33
Filed Under: Playstation Portable

Errrmm…. Why does it say that 500PBP is a incorrect file when i run the thing?
do u have a pandora battery?
Dude If you follow the directions nothing goes wrong. It says incorrect file maybe because you put the cfw and changed it to 500.pbp you have to change the FW to 500.pbp and leave the cfw as eboot.pbp
umm I currently have cfw 3.71 m33-2 and every time I follow these instructions step by step I end up with a corrupt file I cant run… can anyone help?
yo atma currently I have 3.52 M33…when i upgrade it to 5.00 M33 it says tht
“I need to have 3.52 M33-3 or higher”…
>>NEED HELP<<
Ay yo atma, I need some help dude…
I have a PSP Phat with ’3.52 M33′, when i upgrade it to ’5.00 M33′…during the installation, after ‘unpacking’ it says tht I need to have a software ’3.52 M33-3′ or higher…
>>Need Help!!
Hmm that’s odd…. try updating to 4.01 M33 first then jump to 5.00 M33
i have a psp slim 2000 nd i followed the instructions above but whenever i strt the update on my psp it says tht the game could not be started… it currently has 4.71 official sftware
i also owna psp fat nd it has an official 5.51 sftware can it be hacked??
You’re on official firmware. This guide specifically needs CFW. Read this one instead:
http://www.atmaxplorer.com/2009/07/convert-your-psp-to-custom-firmware-without-pandora-battery/
As for your psp phat, you need a Pandora Battery to downgrade that.
Thnxxx Man It Wrkd !!1 Thnxx u
how to disable all plugins?? i don’t get it.
Go to recovery mode and disable plugins there.
hi. i have firmware 3.90 M33-3 on a psp fat can i upgrade to this fw directly???
by doing this will i be able to play metal gear solid peace walker??
thanx in advance
Yes, you can upgrade to this firmware directly. To be able to play Peace Walker though, you need to install the prometheus module for this firmware.
I had cfw 3.71 m33 installed but then I accidently updated to ofw 5.00 instead of cfw 5.00 m33.
Do I still need a Pandora battery to install cfw 5.00 m33?
Nope. You just need to follow this guide:
http://www.atmaxplorer.com/2009/07/convert-your-psp-to-custom-firmware-without-pandora-battery/
Sorry. I found out how to…. Took out the battery and i’m back to 3,52m33. I’ll try sylv3rblade’s advise to others with the same prob.
I should also mention that the firmware is 3,80 m33-5, not the reg firmware.
Re-scratch everything. Now, I’ve been able to download official Firmware 5.00 by creating an update folder and not re-naming the EBOOT file (can u tell i skipped one of the steps, oops). So do I need to your directions on how to convert my psp to coustom firmware, or is the custom firmware already downloaded, it just didnt copy the name correctly?
Well you need the instructions above to upgrade your existing firmware to 5.00 M33. Otherwise you might end up installing the official firmware and end up in a whole lot of trouble