Newbie need help on what to do with psp

I have a psp with version 1.5 firmware and I want to try playing some .ISO games. What should I do to get my psp to play the ISO games?

Update it to at least 3.90 m33 custom firmware there's some guides all over the forum, i'll dig up some links in a sec
You do have custom firmware right?
Link 1: https://www.romulation.org/forum/index.php/topic,572.0.html
A very good start for you i'll post more
Link 2: https://www.romulation.org/forum/index.php/topic,12875.0.html
I'll dig out some more if I can; don't think me, thank the makers of the topicI can't dig up anymore on RomU, google may help too or somebody like Almo knows alot about this kinda stuff

1.5 will most likely not be custom firmware, I dont know a lot about the early firmwares with regards to downgrading/upgrading. I think 1.5 was the origional firmware witch allows playing ISOs from the memory card but im not sure. Ill look into it.You can upgrade to custom firmware strait from 1.5 without using a pandoras battery by using an app/crack called kxploitpatcher.Alo I would suggest updating to the latest CFW which can be found at dark_alex's homepage.Heres a tutorial I found, hope it makes sense.From 1.50 install 3.52 M33
http://exophase.com/psp/download/3.52M33.zip1 - If you are under official 1.50 PSP firmware, copy kxploitpatcher and kxploitpatcher% folders from "1.50only/" of this download to your "ms0:/PSP/GAME/" and use it.
2 - Once done it, or if you are under any Special/Open Edition/M33, copy M33CREATOR folder to your "ms0:/PSP/GAME" (1.50fw) or "ms0:/PSP/GAME150" (SE/OE)
3 - Download official 3.52 eboot, rename it to 352.PBP and place it on "ms0:/PSP/GAME/M33CREATOR/" or "ms0:/PSP/GAME150/M33CREATOR/"
4 - Download official 1.50 eboot, rename it to 150.PBP and place it on "ms0:/PSP/GAME/M33CREATOR/" or "ms0:/PSP/GAME150/M33CREATOR/"
5 - Go to Games/Memory Stick on your PSP, and execute "3.52 M33 CREATOR". Once finished, it will go back to the XMB.
6 - Go again to Games/Memory Stick on your PSP, and execute "3.52 M33UPDATE". You'll have to press X to agree to the installation.
7 - When finished, press X to shut down and reboot manually.
8 - Enjoy your 3.52 M33Install 3.52 M33 Update 4
http://exophase.com/files/psp/M33-1234.zipù
(If Psp Say "The game could not be started. Error (80020148)" do so:
Force turn off Psp. Press and hold press "R" button while turn on the psp.
Now you are in "Recovery menu".
Go on "configuration" and press "X" button.
Now go on "Game folder homebrew" and set it on "(currently: 1.50 Kernel)".Put "M33Update4" folder in "GAME150" and run update.
(Ms0:/PSP/GAME150/M33UPDATE4/EBOOT.BPB)Install 3.80 M33
http://forums.maxconsole.net/attachm...7&d=1200319960Requeriments:- Installation requires a PSP with 3.52 M33-3 or higher. In the future installation using
panddra battery will be released.Instructions- Copy the UPDATE folder into /PSP/GAME/
- Get the 3.80 sony update from somewhere, and put it in same folder, with name "380.PBP".
- Run it, the update will be done by Sony updater. At the end when you are asked to reboot the
PSP pressing X or O, do it.Install 3.80 M33 V2
http://dax.st/m33update2.rar
Instructions: Copy UPDATE folder to /PSP/GAME folderInstall 3.80 M33 V3
http://dax.st/380m33_3.rar
Requeriments:
3.80 M33 or 3.80 M33-2
Instructions: Copy UPDATE folder to /PSP/GAME folder and run itInstall 3.80 M33 V4
http://dax.st/380m33_4.rar
Instructions: Copy UPDATE folder to /PSP/GAME folder and run it1.50 Addon For 3.80M33 (Only for "Phat" Psp).
http://forums.maxconsole.net/attachm...9&d=1200393986Instructions.- Copy the files in the release to a directory called UPDATE
- Move the UPDATE directory to /PSP/GAME380/UPDATE.
- Get sony 1.50 update and copy it to the root with name “150.PBP”
- Run the program and done.

thanks for the help, but b4 I do the upgrade i just want to know: will it be possible for me to downgrade back to 1.5 again after i upgrade to the custom firmware? Cause it's actually my sister's psp and I want to be able to downgrade again if for some reason my sister doesn't like it after i upgraded for her.

Replying to #4

It is possible with a pandora's battery but downgrading is pointless if she doesn't what it custom she should upgrade it to a normal higher firmware because otherwise she won't be able to play new games from late 2006 onwards...

sevenfox · #4thanks for the help, but b4 I do the upgrade i just want to know: will it be possible for me to downgrade back to 1.5 again after i upgrade to the custom firmware? Cause it's actually my sister's psp and I want to be able to downgrade again if for some reason my sister doesn't like it after i upgraded for her.

as far as I know its no longer possible to downgrade to 1.5. The new custom firmware is much better anyhow, and phat PSPs have a 1.5 kernel addon which gives full 1.5 compatability anyway.

Replying to #6

Wouldn't you be able to downgrade in the same way as a non custom psp would be done?

Replying to #7

perhaps on a phat PSP but not on slims, though 1.5 is pretty much obsolete

Replying to #8

I thought as much... And 1.5 does suck

I did some research and found that the latest custom firmware is 5.00 m33 ...should i update it to that?

I think there is some problems with updating all the way up to the highest firmware at once...

from 1.50 update to 3.52M33 first, then to 3.71M33 and then to 3.80M33, then you should be able to update to 5.00M33 without any problems.