PSP DOWNGRADING/CUSTOM FIRMWARE GUIDE

[Mage99]

This guide is straight from my site. I'd tell you to simply go there and enjoy what we got but I dont wanna get another "You spammed this" infracture thingy. This guide is one of the best you'll find and I deem it as safe.



JUST A REMINDER, NEITHER ePirate, PSXHAVEN, OR ANY OTHER MOD OR MEMBER OF PSXHAVEN WILL BE RESPONSIBLE IF YOU BRICK YOUR PSP FROM EITHER FOLLOWING THIS GUIDE, OR FROM USING ANY FILES THAT YOU DOWNLOAD FROM HERE. USE AT YOUR OWN RISK!!! Thank you.


Right, there have been a few people wanting help on downgrading, running isos, homebrew etc, so i'll try my best to help all of you.

1) Downgrading - First of all, if you have a firmware 2.71 PSP or lower, you will need to downgrade to 1.5 to start the process. if you have 2.5/6 or 2.0 i would reccommend upgrading to 2.71 first. (here - for the update).
Now that you have 2.71, or if u already had it, you are ready to downgrade. Fully charge your battery and connect your ac adapter. here for the downgrader. The full and lite versions are available from there (full does everything for you, lite takes some work), now legally your only allowed the lite one, but nobody's looking
After you get the downgrader, check that you don't have a TA-082 motherboard, (TA-082?-don't worry all of this is explained in the downgrader). Just follow the steps and you should end up with a nice shiny 1.5 firmware psp.

1.25)2.80 Downgrading
Very similar to the 2.71 downgrade. Just use this programme, instead and follow the included guide.

1.5)2.71TA-082 Downgrading
1)Copy the UPDATE and idstoragechange folders into /PSP/GAME/
2)Get the official sony 1.50 eboot and put it in the /PSP/GAME/UPDATE folder with the name of UPDATE.PBP
3)Run HEN-D if you are not already running it.
4)Execute the idstoragechange. It needs your battery to be at 75%. It will change some keys of your idstorage needed to downgrade from a TA-082.
5)The program will exit to the XMB. Now execute the generic downgrader, which will show in the XMB as "Update X.YX" under the GAME icon.
6)The generic downgrader will also need your battery to be at 75%. It will then start to downgrade your PSP to FW 1.50.
7)At the end, it will ask you to press X to restart your PSP. Do it.
If all went fine, you'll receive a blue screen telling you that your settings are corrupted, this is fine, go ahead and press the O button to reset your settings to default. After it resets, you will need to re-enter your settings, such as name and language. Welcome to 1.50.
Get the Downgrader: here

1.75)2.80 TA-082 Downgrading
1)Install HEN-D (see the included readme)
22)Confirm HEN-D is working, i.e. run the included cube demo.
3)Run the

[Redbear]

This is incomplete and also not a very good TUT for Modding your PSP.

[vbonez]

Its not even that hard or complicated anymore