PSP Downgrader 2.0 to 1.50
File Downgrade Click Save
http://www.psp-hacks.com/downloads/MPHDowngrader.zip
http://www.psp-hacks.com/downloads/EBOOT_1.50.zip
http://www.psp-hacks.com/downloads/EBOOT_2_0_US.zip
Search Herehttp://forums.qj.net/showthread.php?p=177883#post177883
Steps to use the MPH downgrader:
- Create an UPDATE folder in the /PSP/GAME/ folder of your memory stick
- Copy EBOOT.PBP (update 1.50) in /PSP/GAME/UPDATE folder
- Unpack MPHDowngrader.zip
- Copy overflow.tif in your /PSP/PHOTO/ folder of your memory stick (make sure you have already changed your background to frame_buffer.png as explained in the toc2rta exploit.)
- Copy h.bin to root of your memory stick (meaning in ms0:/)
- Copy index.dat in root of your memory stick (meaning in ms0:/ as well)
- Plug the AC adaptor
You memory stick filesystem should look like this (where X is your memory sticks directory): X:/h.bin X:/index.dat
X:/PSP/PHOTO/overflow.tif (with no other pictures in there) X:/PSP/GAME/UPDATE/EBOOT.PBP (the 1.50 Firmware update eboot)
What you do next is go into the Photo Menu on the PSP and it will show some jumbled text, which is normal. Wait about 30 seconds and then restart your PSP.
From there you will now have a new file in your PSP’s root directory called ms0:/index.dat.bak. In the next step you will go to your Game Menu, Then Memory Stick, and then Launch “PSP Update ver 1.50.”
It will then ask you if you really want to downgrade and then lead you along to the actual installing. Here is where I got scared. It installed to 99% then errored. This is OK. Restart your PSP and turn it back on. It will come up with another error which is OK as well. Restart it again and you will have PSP firmware version 1.50, and it will lead you through setting up language and time etc. Enjoy, and welcome to the world of legal homebrew, not piracy.
source: Black cat, pspupdates
PlayStation Portable (PSP)
Aug 25, 2007
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