Psp Firmware
The PlayStation Portable is the first handheld video game console to use an optical disc format. Other salient features of the device are large display screen, robust multi-media capabilities, and connectivity with the PlayStation 3, other PSPs, and the Internet.
PSP runs certain software called PSP firmware
Psp Custom Firmware
Psp firmware custom upgrade provides new features to device. People who have downgraded their PSP to firmware 1.5 have upgraded their PSP again with custom firmware which allows you to run home brew on your PSP and run games from your memory stick.
If we have already downgraded your PSP then you are aware of the fact that custom firmware gets updates frequently. We can install the custom upgrade easilly. We have to read the installation guide.
We need to unzip the file and put the UPDATE folder into your GAME folder of our PSP. If it asks if you want to overwrite then select "yes". If you have a PSP with M33 custom firmware below 5.00 then you need to find the official 5.00 firmware and rename the EBOOT file to 500.PBP and put it in the update folder.
Psp Firmware Downgrade
Some device is not compatible with modern games and other application. That’s why it needs downgrading the firmware for our PSP, and it has risks and also benefits.
If the downgrading is done improperly this may cause our unit inoperable and worthless. And this is the most obvious risk involved with attempting to downgrade the firmware.
A drawback to downgrading the firmware is that some new media may actually require the newest firmware to operate.
There are several ways to downgrade. We have to know that what we are doing but you must know that messing with the firmware on anything can be dangerous. There are, many of ways that we can find online that will show you step-by-step how to downgrade your firmware.
We need to sure that we get the right files for the firmware version. There really are two guides to getting this safe way of downgrading. One guide is for the PSP classic, and the other is for the Slim. We also need an extra battery.
Installing Custom Firmware Psp
How to install Custom Firmware on a PSP (Slim) is described bellow:
What necessary:
1. Slim PSP.
2. Memory Stick.
3. WINDOWS XP.
4. A mini USB cord.
5. Knife.
Necessary Downloads:
1. The Partition Mover – contains minimum three files in this:
a) the msipl. b) bib, c) msinst.exe, and a readme
2. The Pandora Files (Universal Unbricker)- the eboots, folders, bin file, etc.
3. WinRAR - free archiving program
Step One: Creating Proper Memory Stick
This is where your PSP will be getting the info it needs to be mudded so be sure to follow these steps should be done very carefully:
1) Turn on the psp and go into USB mode
2) Download
3) When your computer detects the PSP, go to “My Computer”
4) Right-click on your PSP’s drive and select “Format”
5) Format the memory stick
6) download the “Universal Unbricker”
7) Place all the files inside of it onto your psp’s drive.
Step Two: Moving the Partitions
1) Download the Partition Mover
2) Extract the folder “msinst” to your hard drive (C:\)
3) Go to “My Computer” and find your PSP drive letter
4) Go to “Start”
5) Go to “Run”
6) Type in “cmd” and press OK
7) Type this in: “cd C:\msinst”
8) Next, type in “msinst ? msipl.bin”
9) It will show some stuff and give you 2 options:
1) Y=Yes 2) N=No
Choose Yes.
10) You will get e a confirmation that the partitions were successfully moved.
Make sure you fully charged your battery before you begin.
Step Three: Hard Mudding Our PSP Battery
1) Take your battery
2) Look on the main board for the display “ICO4″
3) Now, take a needle or something like that and remove pin #5
here is a diagram:
__ (pin 4) __ (pin 8)
__ (pin 3) __ (pin 7)
__ (pin 2) __ (pin 6)
__ (pin 1) __ (pin 5)
Step Four: Installing CFW
Once our battery and our memory stick are being used at the same time, ye will now have what the PSP Mudding Community calls, a “Pandora’s Battery”.
1) Make sure that we put in your Magic Memory Stick
2) Put in your Pandora Battery
3) When our LED’s are done flashing, press “[]” (square) to dump your nand flash
4) After that is done, we will be required reboot, so press X (cross) when your LED’s are done flashing
5) Re-put in your battery and the Pandora menu will load
6) Press X (cross) to install 3.71M33
7) After thats done, we will need to reboot again so press X (cross)
8) Now, remove your battery
9) Plug in your charger
10) Turn on the psp
11) Put in your battery
12) Remove the charger
13) And you should now be running 3.71M33!!!!!
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