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Old 04-11-2005   #1
1337 Sauce
Join Date: Nov 2005
Posts: 204
2.0 -> 1.5 downgrader How-to

Working on a nice walkthrough... It will be up asap.

Includes: tools needed, advantages, fun stuff to change/do on the PSP, watch movies, play ANY game you want.


Stay tuned
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Old 04-11-2005   #2
1337 Sauce
Join Date: Nov 2005
Posts: 204
2.0 -> 1.5 downgrader How-to

For all you that do not like the read-me that came with the downgrader this should help you get from 2.0 down to 1.5

I've used this program myself and I can say that it is safe and it does work, IF you follow the directions. To remove it from the 28 pages that the other thread is currently sitting at, this will be posted at the top of all forums. Please direct all questions to either this thread or the Homebrew thread that will be joining it as needed. Thanks.

Downgrading from 2.0 to 1.5

The following two files are necessary...

* MPH Downgrader
* 1.50 Update EBOOT
* 2.0 Update EBOOT
you'll need to upgrade to 2.0 first, if you're using 1.51 or 1.52

* Please note Norton AntiVirus and/or other virus scanners will incorrectly detect the MPH Downgrader as a virus. It is 100% safe to use.

This will ONLY WORK on a 2.0.

1. You need to unzip the files MPHDowngrader.zip and EBOOT_1.50.zip. Use a program such as WinRAR, 7Zip, or WinZip (check Google). Once they are unzipped, you're ready to begin.
2. Set up a USB connection with your PSP and your computer.
3. Once the connection is set up, open up My Computer and browse to the removable disk that is your PSP. You'll need to set a few things up here.
4. When you first double click to open up the PSP on your computer, you'll be in what's called the root menu. There will be a PSP folder showing if you are in the right place.
5. Copy over to your PSP the following files to THIS location in the root folder...NOT in the PSP folder or any other folder. Index.dat and h.bin should both be in your root directory.
6. Once this is done, open up the PSP folder and then open up the Photo folder. Here, you will copy overflow.tif over, keeping it in the Photo directory and not a sub directory.
7. Now, go back to the PSP directory and go into the Game directory. If there is not already, create a folder called UPDATE. It MUST be called UPDATE and nothing else.
8. Open up the new UPDATE folder and then copy EBOOT.PBP into this folder from your computer. Once all of this is done, you're ready to downgrade. So far, so good.


Double check that you followed the above instructions before continuing.

Good.

9. Now, disconnect the USB connection from the computer and plug the AC adapter into the PSP. As with all upgrades, you must have a certain percentage of battery life as well as the AC adapter plugged in, or this will not work.
10. Go to the Photo icon on your PSP and scroll through the pictures to get to overflow.tif. You do NOT have to press anything. It will start automatically. Two strings of letters/numbers will appear. This is normal and good.
11. Wait AT LEAST 30 SECONDS and then turn off your PSP by holding the power button up until it fully shuts down. Then, start your PSP again.
12. You will now go over to the Game icon and scroll down to memory stick. Select it and you should see the 1.5 update.
13. Select it and start it up. Go through it as you've done before with your 2.0 update and follow the prompts. When the update reaches 99% it will crash and show an error. THIS IS OKAY. DO NOT PANIC. Once again press the power switch up until it fully turns off.
14. Now, turn the PSP back on. You will get another error. Just press the "O" button and it will restart after rebuilding the system data. Then just set it up as you did when you first got your PSP and you have a brand new 1.5 PSP. Be responsible with it.

If you have any concerns, please check this again before going elsewhere due to being extremely busy. Good luck and be careful with this.
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Old 28-11-2005   #3
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Join Date: Nov 2005
Posts: 99
Cool when you come out with your new walkthrough could you email me so I can see it because I'd like to post it on my site. Is that ok?
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Old 29-11-2005   #4
1337 Sauce
Join Date: Nov 2005
Location: New York City
Posts: 186
i dont own a psp YET but hopefully soon

I was just wondering....why do people want to downgrade...and whats the difference?
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Old 29-11-2005   #5
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Join Date: Nov 2005
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People want to downgrade their psps to version 1.5 because there are hacks to execute homebrew applications and by this I mean you can download emulators in eboot.pbp files like nes, snes, sega genesis, gba, gbc, and so forth and you can download roms and play these files straight from the memory stick. Personally I think homebrew is much better than upgrading your psp just because who cares about a web browser when you can get the tenchi on your psp which is just as good and be able to play your favorite old school games right from the root of your memory stick. That's why so many people want the MPH downgrader so they can downgrade their v2.0 psps to v1.5 in an effort to get cool applications and neat games.
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Old 29-11-2005   #6
1337 Sauce
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thats friggin awesome.....makes me want a psp even more.
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Old 29-11-2005   #7
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yea it is pretty sweet and v1.00 the jap versions are even less secure which means they are more hackable.
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Old 28-03-2007   #8
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ty unbri always wanted to know why some poeple wanted to downgrade
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