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Downgrade PSP 2.0 to PSP 1.50

27 September 2005 20:08 by James "Dela" Delahunty | 124 comments

Downgrade PSP 2.0 to PSP 1.50 Not long after the toc2rta exploit made it possible to run some code on a PSP with v2.00 firmware, a downgrader has surfaced. All respect and appreciation should go to MPH for doing what many tried and failed to do. I have tested this method and just spent the last few hours preparing and putting a guide on the site for it. Check this out...




I successfully downgraded my PSP from 2.00 to 1.50. The guide I have written has some screenshots and some pictures I took of my PSP (quality kind of sucks, but I'll see maybe tomorrow if I can get something better online.) There is a lot of text at the start of the guide (including one warning EVERYONE must read) because I give a brief overview of the process before illustrating it properly.

This guide was written with intent of making it a little easier for new PSP users to downgrade to 1.50 to run legal homebrew apps. This is not a guide to PSP piracy. I believe that since you bought the console (and let's face it, they are not cheap) you should be allowed to run your own homebrew and not just "authorized software".

Check out the guide at: http://www.afterdawn.com/guides/archive/downgrade_psp_2.cfm

Feedback (spelling mistake notification etc.. ;-) ) is welcome, just send me a PM.

Again, all respect to MPH for the excellent downgrader.

Source:
PSPUpdates


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    Discuss this article!  There are more user comments available, read them here
    sonytaek (Newbie) 6 January 2006 10:26 Send private message to this user   
    I guess its me, you and sieuwsan. We are pretty much fu%%#% by sony. Any ideas how to get around this problem mate? I really wanna play homebrew.
    puregreen (Newbie) 6 January 2006 10:28 Send private message to this user   
    heh lol i know dude me to :( its gay.. ill have a look around.. but i dotn know how my self coz i cant Evan get it that low!!! :( lol
    adam912 (Newbie) 6 January 2006 13:10 Send private message to this user   
    unluki lads i no wat to do but i upgraded to 2.6 so i cnt do it but if ny1 wants to no jus email me at rojer63@tiscali.co.uk
    sonytaek (Newbie) 7 January 2006 5:22 Send private message to this user   
    Hey guys I notice something else with my version 2.0. I cannot set picture as wallpaper there was no such options and there is also no Internet browser (Network). I dont get it i thought firmware 2.0 suppose to came with that. Anyone got a fake 2.0 like mine?
    lxhotboy (Member) 8 January 2006 9:04 Send private message to this user   
    The problem is that even though you see 2.0 firmware in the settings it is probably still 1.5. I notice that too once when i was fooling around upgrading and downgrading. Basically you have not finished all of the requirement of the downgrade or upgrade process. Let me fool around with mine and i will get back to you with more info on how to help you out.
    sieuwsan (Inactive) 10 January 2006 6:35 Send private message to this user   
    hey guys

    I have tried for a very long time to get my PSP fixed. I could not downgrade to 1.5 version. But I tried something different.
    I bought My psp in HongKong. from the start it was a 2.00 frimware. Then I wanted to downgrade which did not work. As you can see in previous messages.
    But something was really strange I did not have the browser everyone is talking about and I don't have the option to but the picture as a background So I thought mayb I already have a 1.5 but with that programm installed which will let your psp think that you have the version 2.00 installed onto it. This whay is you play a UMD game it will not ask you to upgrade and you can play most of the game exept GTA.
    So I downloaded the emulator and put it on my memorystick and put beach.iso in the iso map to try it. And guess what it was running and it is great So I think the shopkeeper already did some weird stuff with my psp but I am Happy now.

    Hope this will help you out.
    Cheers
    sieuwsan (Inactive) 10 January 2006 6:37 Send private message to this user   
    so sonyteak Just try to put a emu on it and try to play virtual tennis or spiderman because these 2 games will 100% work.
    ZippyDSM (AfterDawn Addict) 10 January 2006 16:38 Send private message to this user   
    Dont forget that games auto update the frimware 0-o so untill they make it where it can auto config itself or soemthign you have to paly hot potato wif the frimware ><
    OMG sony give it a break they've amde the PSP veristile so what if it can run emluation >< morons...
    sonytaek (Newbie) 11 January 2006 1:27 Send private message to this user   
    Hey sieuwsan the answer is in your post! In fact we did get a version 1.x. Someass uses wab version changer on our psp to make the firmware looks as if its 2.0. But in fact we get nothing of the 2.0 capability. So what i did was use the wab ver changer to change it to 1.5 and run the US 2.0. Bingo!!! it works and i gotta tell u 2.0 is much better but anyway i downgraded it to US 1.5 using mph no problem. This will work for you. If u need to play 2.0 games then u just change it to 2.0 and back once ure done.
    Macteezy (Newbie) 17 January 2006 5:48 Send private message to this user   
    i need to know how to downgrade from psp 2.60 to 2.00 please someone help me
    lxhotboy (Member) 17 January 2006 16:35 Send private message to this user   
    do a search first next time. There is no way as of now to downgrade 2.6. They have just began to get some simple homebrew working for it. you will just have to wait. Check www.pspupdates.com for progress on the downgrader. I am sure 2.6 will be able to be downgraded soon so check out that site to stay current on new info for the psp.
    ant123 (Newbie) 2 February 2006 9:18 Send private message to this user   
    hi please help i hav firmware 2.0 and want to downgrade to 1.5 i hav put eboot and h.bin and index.dat in the right places but cant find overflow.tiff anywhere please help Thanks
    lxhotboy (Member) 2 February 2006 10:16 Send private message to this user   
    if you have antivirus protection you probably will see a virus alert when you open the file and it deletes the overflow file. Turn off virus protection. Delete the files. Download the files again and try it again. Overflow will be there as long as the virus protection is turned off. The overflow is not a virus but my norton recognized it as one and evertime it would delete the file leaving me looking everywhere for it.
    ant123 (Newbie) 2 February 2006 10:21 Send private message to this user   
    hi thanks for that but everytime i download the file my antivirus deletes a psp trojan and if i turn virus protection off the trojan will brick mi psp won't it??
    lxhotboy (Member) 2 February 2006 10:24 Send private message to this user   
    Quote:
    The overflow is not a virus but my norton recognized it as one and evertime it would delete the file leaving me looking everywhere for it.

    It is not a virus and wont brick your psp.
    burak1517 (Newbie) 18 February 2006 0:31 Send private message to this user   
    does this works on japanese version
    aceix (Newbie) 8 May 2006 11:42 Send private message to this user   
    i have done steps 1-5 all the way to update ver 1.50 "When you have booted your PSP again, on the PSP menu go to GAME and scroll down to Memory Stick. Press X." STEP 5
    but cant find "UPDATE" in my psp. and yes i have index.dat.bak in my "root" folder
    moofe (Newbie) 26 June 2006 21:08 Send private message to this user   
    i no of a way 2 dongradwe 2.6 and up wat u do is u frst u go down to 2.5 den go down2 2.0 an dthen u use the mph downgrader trust me i no wat i m talkin bout here

    tootles
    moofe (Newbie) 26 June 2006 21:45 Send private message to this user   
    i hafta warn every1 who uses my method tho is that me an my bro both had psps and wee brikked them both but then our rich dad bought us reaplacaments an now they work ok soso with my method of downgrading from 2.6 to 1.5 if any1 has questions email me at bubbythetourg@hotmail.com
    ZippyDSM (AfterDawn Addict) 26 June 2006 21:56 Send private message to this user   
    SO if I wanted tog et a PSP what would be best for me a older one thats easier to mod?

    the newer ones bascily sux to amny new handicaps...er improvements *L*
    chugs1981 (Newbie) 18 February 2007 5:43 Send private message to this user   
    Originally posted by aceix:
    i have done steps 1-5 all the way to update ver 1.50 "When you have booted your PSP again, on the PSP menu go to GAME and scroll down to Memory Stick. Press X." STEP 5
    but cant find "UPDATE" in my psp. and yes i have index.dat.bak in my "root" folder
    Hi, I'm having the same issues as you....did you get a reply from anyone? It's driving me insane. Please help if you can. Many thanks
    assasinex (Junior Member) 24 May 2007 6:47 Send private message to this user   
    can someone help me >.< i cant upgrade to 1.5 for some reason ==" im currently on 1.0 ...and i cant do anything
    FINALM6 (Newbie) 7 June 2007 14:10 Send private message to this user   
    HELP ME PLEASE everytime i put the overflow into the pictures then go to my psp to open it my psp says there are no images pleas someone help me.
    kdawg224 (Newbie) 3 October 2007 19:48 Send private message to this user   
    ok so i used psp 3.03 easy downgrade software and i know some hacks want you to do all this manually.this program will gp through all the trouble for you.instead of placing the firmware setup in the image slot it puts it in the game slot.i youtubed it.however, now that i downgraded to 1.5 am i stuck there forever?i have heard about people bricking a system trying uprade.the problem i'm having is that i can't view photos or listen to mp3's.maybe thats just the price i have to pay.are there programs out there that i can use to get these functions back?sorry this is long but this is new to me.if there is anything you can do or point in the right direction it would be apprectiated.
    calbill (Newbie) 14 November 2007 18:32 Send private message to this user   
    I seen a person playing nes games on his psp and it said version 3.71 m33-2. My question is how and what version can be upgraded or downgraded to that version. Thank you
    luvskate (Newbie) 13 December 2007 16:54 Send private message to this user   
    Dude can anyone please help me in this situation i have psp Fat and the Firmware Iam running is 3.73 and i want to downgrade it but ido not know how to use the Pandora Battery please let me know how to install it on the psp i have the correct battery its the one made in cheina and we have another psp my brother has one please get back to me
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