This part is for installation of the 3.71 Firmware. Note that you must meet the requirements before proceeding or you may end up bricking your PSP.
Installing 3.71 M33 on 3.52 M33
Requirements:
- PSP Phat with 3.52 M33-3 or greater or PSP Slim with 3.60 M33 (follow this guide if you’re PSP is still OFW)
- PSP battery that’s at least 78% full
- &n The 3.71 M33 and installation file
- Set the kernel to 3.52: do this by (hard) booting your psp while holding the R button. Go to Configuration, look for the kernel configuration and set it to 3.52
Installation of 3.71 M33 on 3.52 M33-4:
- Extract the 3.71 M33 files to your computer.
- Copy the Update folder to X:/PSP/GAME/ on your PSP’s memory stick.
- Download the official 3.71 update and rename to 371.PBP.
- Copy the 371.PBP to the directory; X:/PSP/GAME/M33CREATOR/ on your PSP’s memory stick.
- Run 3.71 UPDATE under GAME on your PSP
- Press X if asked to correct idstorage keys
- Continue to install the official 3.71 SONY when prompted
- After all process is complete, press X. Your PSP will reboot.
- Congratulations, you’ve just installed 3.71 M33
Now in order to switch from 3.71 M33 to 3.80 M33, you need update 4 of 3.71
Installation of 3.71 M33-2 on 3.71 M33:
- Download 3.71 M33-2 and extract it to your computer.
- Copy the Update folder to X:/PSP/GAME/ on your PSP’s memory stick.
- Run 3.71 M33-2 UPDATE under GAME on your PSP
- After all process is complete, press X. Your PSP will reboot.
- Congratulations, you’ve just installed 3.71 M33-2
To install 3.71 M33-3 and 3.71 M33-4, just repeat the steps above using the files provided. As a precaution, format your Memory Stick or delete all used files before proceeding. After which you can proceed to the next installation.
Written by sylv3rblade on January 25, 2008 at 12:40 am. Follow responses to this entry via the RSS 2.0 feed. You can leave a response, or trackback from your own site.
Tagged with: Custom Firmware, Playstation Portable, Tips
Filed Under: Playstation Portable
Tagged with: Custom Firmware, Playstation Portable, Tips
Filed Under: Playstation Portable
well when i apply the 3.52m33-3or4 update my psp stick to the save data option in the game menu after the reboot is done. what shall i do?
Wow this is the manual way of doing the upgrade. I used an easy installer for mine .
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yep. Doing things the hard way is the best for some people (easier to get at the top of SERPs too ^^)
Note.. to jay (guy with the reply) I still don’t understand what you’re trying to say =(
i have a ofw psp and i want to convert to a cfw ..what should i do please help me please…i dont have a pandora battery
[re=1504]Aerial[/re]: Read my most recent post for an easy to follow guide to making a pandora battery
Amazing article! Detailed and very interested. I am going to recommend this blog to my friends.
I have ofw 3.80 i want to install cfw 3.71 m33 how can i go forward.
Can i play games without umd if i upgrade it to 3.71 m33 CFW.
from where can i get free games and how to play it and put it in which folder.
Please help me out i will be very thankfull to you.
Has anyone tried to downgrade FW5.2 to 1.5? Really appreciate anyone that could walk me through from doing it. I want to install the CFM 5.00 M33-3. thanks
Hi, I’ve got a PSP 1000. It’s firmware is 2.50. How do I upgrade it to a 5.00 M33?
Also, I just myself a Hybrid pandra battery. So do i just need to download the firmware 5.00 M33. Could you plz guide me. It’s my first time with all this.
Many thanks
I’m going to redo this post sometime soon to include a proper installation guide. Please bookmark and come back again.
so if i have phat psp that is version 5.51 can i still turn it to 3.80 M33 CFW?!
dooo i neeed pandora battery
well…I have phat psp with v 5.03 I tried evrything I could to downgrade it to 3.90 or less but nothing I never tried pandora’s battery but I tried pandora’s battery without cutting it still refuse to downgrade even any kind of program won’t work at all please hellp me
Why would you want to downgrade to 3.90? Well in any case, follow this guide:
http://www.atmaxplorer.com/2009/07/convert-your-psp-to-custom-firmware-without-pandora-battery/
I’m relly sorry…but still nothing
Chickhen + Hellcat’s didn’t downgrade your PSP?
# Extract the 3.52 M33 files to your computer.
# Copy the folder ‘M33CREATOR’ to the directory; X:/PSP/GAME150/ on your PSP’s memory stick.
# Download the official 3.52 update and rename to 352.PBP.
# Copy the 352.PBP to the directory; X:/PSP/GAME/M33CREATOR/ on your PSP’s memory stick.
# Download the official 1.50 update and rename to 150.PBP.
# Copy the 150.PBP to the directory; X:/PSP/GAME150/M33CREATOR/ on your PSP’s memory stick.
so we need 1 M33CREATOR in GAME150 folder and 1 more M33CREATOR in GAME folder???