______   ______ ______ ______  _                                        
(_____ \ / _____|_____ (______)(_)       _                               
 _____) | (____  _____) )     _ _  ___ _| |_  ____ ___   ____ ___  ____  
|  ____/ \____ \|  ____/ |   | | |/___|_   _)/ ___) _ \ / ___) _ \|    \ 
| |      _____) ) |    | |__/ /| |___ | | |_| |  | |_| ( (__| |_| | | | |
|_|     (______/|_|    |_____/ |_(___/   \__)_|   \___(_)____)___/|_|_|_|
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- A Homebrew Downgrade guide by systemx, Guide confirmed by Niacin        -
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PLEASE NOTE THE DOWNGRADE FILE LINKS LOCATED IN THIS GUIDE WERE NOT DONE BY
ME I HAVE SIMPLY CREATED AN EASY TO FOLLOW GUIDE IN PERFORMING THE DOWNGRAD
PLEASE NOTE THAT NOT I NOR THE CREATORS OF THE DOWNGRADE ARE RESPONSIBLE
FOR BRICKED PSP'S. DO THIS ENTIRELY AT YOUR OWN RISK YOU HAVE BEEN WARNED
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The new 2.0 Downgrader for the PSP Is out, Please note that this takes
the current 2.0 Firmware and downgrades it to 1.5 Then you can load
homebrew on your PSP

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/!\ I recommend having the PSP Charged at 100% before attempting this. /!\
--------------------------------------------------------------------------

If you have a 1.51 or a 1.52 you now need to upgrade your psp to a 2.0 in
order for the downgrader to work. This can either be done via the Demo 
disc or if you are lucky enough to have WIFI use the update icon on the 
psp. Or lastly Download the update and simply use a USB cable to transfer
it onto the psp. Below are the official Links for the Sony Updates Ive
included both JPN/US Update versions.

  JPN 2.0 FIRMWARE - http://www.playstation.jp/psp/update/ud_03.html
  USA 2.0 FIRMWARE - http://www.us.playstation.com/PSP.aspx?id=softwareupdate/pc_200.html


Ok now assuming that all went well you now have yourself a PSP 2.0 Firmware
What you now need is the MPH Release Downgrader which can be obtained from
elz-dev.com Once you have downloaded this plug the PSP into the USB cable 
and it wouldnt be a bad idea to plug it into the Power point. 

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/!\ I recommend having the PSP Charged at 100% before attempting this. /!\
--------------------------------------------------------------------------

 Now once you have downloaded the Zip Package and unzipped it with either
 windows zip or winrar,winzip etc. the file layout is as follows.
  
    /PSP
     |- /PHOTO
          |- overflow.tif

    downgrader.txt
    h.bin
    index.dat

  Now you are also going to need the 1.50 Update, which can be obtained from
         http://shockzone.free.fr/PSP/Tool/EBOOT_1.50.zip
  The eboot file in there must be placed in the memory stick as follows.
  use the PSP USB function and a USB cable and trasnfer the file to
         
  MEMORYSTICK:/PSP/GAME/UPDATE/EBOOT.PBP
  

  Place the Overflow.tif from the MPHDowngrader.zip file in the following directory
  !! Use the PSP USB function and a USB cable and trasnfer the file to the memory stick !!
         
  MEMORYSTICK:/PSP/PHOTO/overflow.tif


  Also place the h.bin and index.dat from the MPHDowngrader.zip in the the root 
  directory of your memory stick as follows.
         MEMORYSTICK:/index.dat
         MEMORYSTICK:/h.bin

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/!\  MAKE SURE THE PSP IS PLUGGED INTO THE AC ADAPTOR AND 100% CHARGED /!\
--------------------------------------------------------------------------
  
 Now Exit the USB Mode of the PSP, and goto the PHOTO MENU, this will now
 launch the version changer. The PSP Light will go off after the version
 changer has done it stuff. Wait approx 10-15 seconds and power the PSP
 back on. Once it is on Enable USB Mode and check to see if the following
 file exists.
 
 MEMORYSTICK:/index.dat.bak

 If so all is well, goto the game menu and Launch the PSP Update and simply
 follow the onscreen instructions to update your psp. The update will get to
 99% and Fail, No cause for concern this is still correct. The psp will now
 do a faily length restart just let it play out. Now one of two things will
 happen either the PSP will restart or it will turn off. After the LED goes
 off and the psp has turned off.. Wait 10-15 Seconds and power the PSP back 
 on. You now have a 1.50 PSP, Congradulations.

 This guide was written by SystemX, But the credit goes to MPH and the guys at
 pspcaliber for there fine work.

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- A Homebrew Downgrade guide by systemx, Guide confirmed by Niacin        -
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