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Slim psp 3.71 downgrade
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Senior Member

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30. June 2008 @ 12:18 _ Link to this message    Send private message to this user   
Hi all, been off the psp scene for a very very long time now, and suddenly got offered a slim psp for £50 from a guy at work. Anywayyy

Its 3.71 and was wondering if anyone could help me downgrade it? iv tried following some of these guides but they've really confused me, i do have access to a phat psp with custom firmware if thats any help


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30. June 2008 @ 12:35 _ Link to this message    Send private message to this user   
you cant downgrade a slim as the lowest fw you can install is 3.60 so you will need to install cfw on to it.

because you have a cfw psp it makes it a lot easier for you.

just use upms to make a pandoras battery and a magic memory stick (needs to be about 256mb~1gb and formated) and then you just pop it into the slim and install the cfw that you want

read up on upms first then ask the questions as it is simple to follow

DERP DERP
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30. June 2008 @ 12:36 _ Link to this message    Send private message to this user   
Try THIS guide...it will get you where you want to be. :)

ibizaGTi


Senior Member

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30. June 2008 @ 13:40 _ Link to this message    Send private message to this user   
Bit of a problem!
when i get to this step

"Now use the Magic Memory Stick + Pandora Battery on the PSP that needs to be unbricked or Custom Firmware installed to."

I put the battery and the memory card in the other psp and the green light comes on but the screen just stays black, any idea??

EDIT
The battery wont work in either psp the screen just stays black ith the green light on? but the battery from the slim psp works in them both. Hope this helps


This message has been edited since posting. Last time this message was edited on 30. June 2008 @ 13:57

Senior Member
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30. June 2008 @ 18:19 _ Link to this message    Send private message to this user   
Originally posted by barnesy91:
Bit of a problem!
when i get to this step

"Now use the Magic Memory Stick + Pandora Battery on the PSP that needs to be unbricked or Custom Firmware installed to."

I put the battery and the memory card in the other psp and the green light comes on but the screen just stays black, any idea??

EDIT
The battery wont work in either psp the screen just stays black ith the green light on? but the battery from the slim psp works in them both. Hope this helps
That means that you have created the pandora correctly, but your MMS is not right. Try remaking the MMS again and you should hopefully have more luck!
Also, just to confirm, are you using Vista? as some people report that the MMS cant be made properly on vista machines.


Senior Member

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1. July 2008 @ 03:26 _ Link to this message    Send private message to this user   
Right ok, I will try remaking the memory card when i get home. Yes my laptop does run on vista, il try remaking it on my main pc which is on XP. Does the battery have to be pandora at all times once iv got custom firmware on my slim psp? As the battery im converting to Pandora isnt actually mine. I know that you can convert them back as i did it last night.
Thanks Ibiza


AfterDawn Addict
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1. July 2008 @ 03:31 _ Link to this message    Send private message to this user   
once you're done putting custom firmware on the slim, you can revert the pandora's battery back to normal.

ps2: v7 scph-39001 - independence exploit - hdloader 0.8c - maxtor 300gb hdd
(+[__]%) psp slim ta-085v1: 6.60 PRO B10
wii (powered by bootmii/priiloader): 4.1u - d2x v10beta53-alt (base 56) - configurable usb loader v70r51/devolution r188 - wd scorpio black 7200rpm 320gig w/ ams venus ds2 enclosure

got a whole lot more to list . . .
Senior Member

1 product review
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2. July 2008 @ 03:59 _ Link to this message    Send private message to this user   
Thanks for the help but its still not working.
I've followed numerous guides and have done exactly what it says but still the green light is coming on but the screen is staying black, Has anyone got any idea?
Thanks again


Senior Member
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2. July 2008 @ 09:07 _ Link to this message    Send private message to this user   
try upms its simple to follow

this is a guide for it i wrote for some one

1. put the 256mb-1gb memcard into the modded psp.
2. go to settings->system settings->format memory stick (this will delete everything on it)
3. connect the psp to the computer and download these files
a)upms
b)1.50 update ofw
c)3.71 update ofw
d)3.80 update ofw
e)3.90 update ofw
4)unrar upms and copy the .cso to the iso folder
5)rename 1.50 to 150.pbp, 3.71 to 371.pbp, 3.80 to 380.pbp and 3.90 to 390.pbp
6)copy all the updates to the root of the memory stick
7)load up umps on the psp
8)do the steps on upms
a) 1. -> make normal ipl
b) 2. -> back up eeprom and make pandoras battery
c) 3. -> use dc version5 and press o to not copy the 1.50 eboot
8)exit and take the battery and memory card out
9)put the memory card into the bricked/ofw psp and then put the battery in
10)choose dc version5
11)press L + R to back up the NAND (important)
12)then away you go installing 3.90m33
13)once finished put the ac in the bricked/ofw psp and take the battery out
14) turn it on and put the battery in
15) load up upms and install the fatmsmod
16) load upms back up and then go to the menu
17) go to 2. and click restore eeprom
18)now you have everything sorted just install the 1.50 kernel add on if you are using a phat psp

hope that helps

DERP DERP
Senior Member

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2. July 2008 @ 16:00 _ Link to this message    Send private message to this user   
Why am i having problems with this? im following every step exactly :S. I get up to step 9 on that guide that Dr1ver posted and when i put the battery in it doesnt turn on? and when i turn it on manually the green light shows for a second and then goes off. Anyone got any ideas?


AfterDawn Addict
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2. July 2008 @ 16:15 _ Link to this message    Send private message to this user   
try placing in the battery first, then the memory stick.

also, with the u.p.m.s., you have to hold the l-trigger down when putting in the battery.

ps2: v7 scph-39001 - independence exploit - hdloader 0.8c - maxtor 300gb hdd
(+[__]%) psp slim ta-085v1: 6.60 PRO B10
wii (powered by bootmii/priiloader): 4.1u - d2x v10beta53-alt (base 56) - configurable usb loader v70r51/devolution r188 - wd scorpio black 7200rpm 320gig w/ ams venus ds2 enclosure

got a whole lot more to list . . .
Senior Member

1 product review
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2. July 2008 @ 16:45 _ Link to this message    Send private message to this user   
Done! Thanks for all the help everyone.

cee43ja1
Thanks for that it worked fine after i pressed the l trigger.

Cheers again



Senior Member

1 product review
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2. July 2008 @ 17:09 _ Link to this message    Send private message to this user   
Ok sorry about this people but iv tried searching it but no luck.
Iv put a game inside the iso folder. Its a CSO, is this the correct place to put it? as when i try to play it it says game could not be started....
Thanks


AfterDawn Addict
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2. July 2008 @ 17:15 _ Link to this message    Send private message to this user   
the folder is X:\ISO, correct? (x being the psp/memory stick letter)

also, did you change the iso driver to sony np9660?

ps2: v7 scph-39001 - independence exploit - hdloader 0.8c - maxtor 300gb hdd
(+[__]%) psp slim ta-085v1: 6.60 PRO B10
wii (powered by bootmii/priiloader): 4.1u - d2x v10beta53-alt (base 56) - configurable usb loader v70r51/devolution r188 - wd scorpio black 7200rpm 320gig w/ ams venus ds2 enclosure

got a whole lot more to list . . .
Senior Member

1 product review
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2. July 2008 @ 17:20 _ Link to this message    Send private message to this user   
Yes thats right, And no i never did anything like that lol, Another thing aswell can i format my memory card now? theres loads of random stuff on my memory card and it looks a mess.

Also is there a program to customise the XMB?


AfterDawn Addict
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2. July 2008 @ 17:31 _ Link to this message    Send private message to this user   
yes, you can format it now, if you don't need the u.p.m.s. anymore.

as for xmb customizing, it depends on the firmware you're using. i wouldn't know how to customize them, as i don't use them myself, but other members know how.


changing the iso driver is fairly easy, as you can do it in the xmb. press select, and the vsh menu will appear. go to the umd iso mode, and change it to sony np9660; just use the left and right on the dpad to change.

ps2: v7 scph-39001 - independence exploit - hdloader 0.8c - maxtor 300gb hdd
(+[__]%) psp slim ta-085v1: 6.60 PRO B10
wii (powered by bootmii/priiloader): 4.1u - d2x v10beta53-alt (base 56) - configurable usb loader v70r51/devolution r188 - wd scorpio black 7200rpm 320gig w/ ams venus ds2 enclosure

got a whole lot more to list . . .
Senior Member

1 product review
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2. July 2008 @ 17:55 _ Link to this message    Send private message to this user   
Nice one for that cee43ja1 massive help :D all sorted now,
Anybody got any idea about the gameboots, xmb editing etc? thanks again


sean5000
Suspended due to non-functional email address
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4. July 2008 @ 03:22 _ Link to this message    Send private message to this user   
I'd suggest u buy a pandora battery from deal extreme (http://www.dealextreme.com/details.dx/sku.12472) its cheap and u can keep it just in case u brick it later on.


To make the magic memory stick its easy, just follow this video, its awesome thats the one i used to make my memory stick:

http://www.youtube.com/watch?v=JPwlrAZa69c


One more time ill say buy a pandora from dealextreme or get it from a mate.
BUY IT lol



vvvvv
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Senior Member
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4. July 2008 @ 05:53 _ Link to this message    Send private message to this user   
heres a guide i made ages ago for xmb editing

http://forums.afterdawn.com/thread_view.cfm/662808

if you are on 4.01m33 then you will need the new CXMB but its likely to be installed in the same way

this site is good for themes - http://customizepsp.co.uk/

DERP DERP
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