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PSP Homebrew ISO Packaging

Posted Apr 10, 2006 at 7:42AM EST by QJ Staff

Listed in: Hacks & Exploits, Homebrew Applications, How-To Tags: psp exploits, psp hacks
Ó

So, have you ever wanted to send PSP files to your memory stick in one nice package to avoid long transferring times? Well, PSPMad has released a method that will allow you to do just that! At first, PSPMad released a very popular homebrew application (Lua Player) in ISO format. Up until now, ISO's have mostly been used for illegal reasons, but now there is a legal reason in which we can use it. PSPMad's tutorial has outlined the process in which you can convert a homebrew game into ISO format.

Although this process is no where near ideal, it does show an interesting concept. PSPMad's original intention was an attempt to run all homebrew on 2.0+ firmware due to the fact that it can run an ISO launcher (but not execute ISOs). Although, as many PSP veterans are aware of, you can not bypass the GTA exploit limits unless you find and create another exploit. PSPMad's concept was interesting, but it just didn't work correctly.

On 1.5 however, this method does serve a purpose. It is easier to send one package in the mail than it is several packages, and this method can be looked as the "one package" method. By compressing a homebrew in ISO format, one can transfer a single, compressed file to there PSP which drastically decreased transfer time on larger programs (that contain numerous files). Converting the homebrew to ISO format and loading it will take about 4 times the time it regularly takes to launch homebrew, but this is an interesting concept otherwise. This process isn't ideal, nor does it push us futher in our knowledge of the PSP, but you never know what the future may hold!

If you wish to give this a try yourself, you may download the Lua Player ISO below.

Download [Lua Player ISO]



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Comments 


 
# first postGuest 2006-04-10 09:32
nocomment

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# funGuest 2006-04-10 09:33
Takes 4 times longer to load ouch.



since this is an iso will pspu now host the umdemu since without it people cant use this release?

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# -cyanide 2006-04-10 09:33
one of those useless but interesting things.

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# -cyanide 2006-04-10 09:33
one of those useless but interesting things.

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# Comments -Justin B 2006-04-10 09:38
We will not host the UMD Emu at this point, or provide instructions on how to load an ISO image

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# good baseGuest 2006-04-10 09:39
a good base for a localization of the umdemu ... what regioncode!?

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# pmp video isoGuest 2006-04-10 09:44
Time for PMP Isos or other Video and Game Isos ;-)

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# hmm..Guest 2006-04-10 09:53
I'm afraid I don't see the point...

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# Comments -Justin B 2006-04-10 09:54
Does not work on 2.6..

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# no *****...Guest 2006-04-10 09:59
why would it work on 2.6?

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# Comment -Justin B 2006-04-10 10:26
A user asked, so i answered :P Do not flame on the blog

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# Iso?Guest 2006-04-10 10:31
Iso doesn`t compress anything,unless he ment to say " put a compressed file inside a ISO container"?I think that defeats what they were trying to do.

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# yeah...Guest 2006-04-10 10:32
seems like a loophole creator to me. it reminds me of the case where Grokster was sued because its sole purpose was for copyright infringement, whereas BitTorrent cannot be sued successfully since it is advertized as meant for non-illegal activity. point being, now that ISOs aren't used for solely illegal activity, they will be less condemned in the homebrew world; in theory, that is.

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# ditoGuest 2006-04-10 10:35
dito

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# Comments -Justin B 2006-04-10 10:38
ISO's do "compress" several files into one solid file, that is what compression is. Even though it does not decrease size, it does "compress" the files into one package

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# ummGuest 2006-04-10 10:57
Thats called "packaging" not compression,esp ecially if there is no decrease in size.

Torrents aren`t compression,fru it loops in a box is not compression.

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# 2.5 workingGuest 2006-04-10 11:15
Works on 2.5

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# Comments -Justin B 2006-04-10 11:19
Actually, I needed to correct my above statement. ISO files do indeed compress numerous files into a smaller (size) package. This is indeed compression as originally stated.

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# eehh...Guest 2006-04-10 11:21
pretty cool idea, and glad to see ti works, but its not very practical

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# 2.0 included in 2.0+Guest 2006-04-10 11:35
does "2.0+" mean "2.0 + everything else above it" or does it just mean "everything about 2.0"?



Since they both use different methods to run homebrews, I'd like to know.

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# 2.5 n 2.6xplicitratingz 2006-04-10 11:43
how does it work on 2.5 and not on 2.6 if it use the same gta exploit and this sucks they soud comeout wif a 2.0+ iso loader this ***** sucks

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# too goodGuest 2006-04-10 11:56
imagine if this could be used with DAXZISO, more homebrewis too good

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# FYIGuest 2006-04-10 11:56
Putting multiple files in an ISO file will take *more* space than the files do by themselves because you have to deal with the ISO headers and file structures.



Compressing the ISO with the DAXZISO creator may or may not make it smaller. It's all a matter of how well the files in the ISO can be compressed.



And no, this really won't change the minds of ISO opponents. I have no problem with ISOs of legal files. I still have just as much a problem with the ripped UMDs.

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# PsPmadGuest 2006-04-10 11:58
ill work and make this run on 2.0+

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# Illegal?Guest 2006-04-10 12:38
Just because it's an ISO of a PSP game doesn't automatically make it illegal. I put backups of games that I ripped myself on my memory stick so I don't have to keep track of 5 or so UMDs, and running them at 333MHz is cool stuff.

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# LegalityJustin B 2006-04-10 12:42
Playing backups of games on your PSP is illegal for almost 99% of the cases. You can not play your own copy of a game on your own memory stick unless your original is damaged or unusable. Many try to say that because it is your game it is legal, but the DCMA disagrees and only allows the archived backup under certain circumstances.

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# iligal sucks!! but iso don'tcalhaus 2006-04-10 13:10
just Becuse some people use pirate isos don't mean that all people does! for example i do backups of my games an put them in iso tipe becouse is more fast(very very fast becouse when i play with my friends in loading i have to wait for them becouse isos load more fast...:D)

and becouse isos are more safe to transport with us and if aplications can come in that tipe of file please go for it



http://s2.bitefight.com.pt/c.php?uid=15723

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# Comments -Justin B 2006-04-10 13:33
Calhaus: You are running them illegally if what I assume is correct (you still have the playable UMD Game)

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# Correct.FreePlay 2006-04-10 13:41
According to the DMCA, one of few legal reasons to circumvent copyright protection is to create an archival copy as a way to proactively prepare for the eventual destruction of the original medium. In other words, if you still have a working UMD and you live in the US, it is illegal to play a backup of the UMD, as well as to actually create the backup.



Gotta love copyright law...

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# DAXZISOGuest 2006-04-10 15:02
look it up, it can literally cut any iso in half, i use it for daxter (Which works on 1.5 but only the iso)

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# DCMACasablanca Gamer 2006-04-10 15:18
***** DCMA, not everybody lives in the US !!

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# You're Sony's BIT.CH IF YOU UPGRADEGuest 2006-04-10 15:20
1.5 haxxoring forever.



I'll never upgrade, ever.

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# Converting programs to iso makes appz readonly!!Guest 2006-04-10 16:33
The major flaw I see with this is it takes more time to bootup and that your making the homebrew program read only. PSPRadio has a config and database file that it can't update when in iso format. This method will only fully work app or game doesn't need to write to somefile in the iso.

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# jezusGuest 2006-04-10 18:29
Sorry Justin,but your still wrong,ISO is a container format nothing more there is not one bit of compression just a single package.

If i pack all my worldly goods into a box does that mean everything i put in has been compressed? No i just means theres one single box with lots of items inside.

Read here: http://en.wikipedia.org/wiki/ISO_image



You tell me where it says that iso is a compression.

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# Well...Guest 2006-04-10 20:09
Depending on the number of small files on a memory stick and your block size, it will... "artificially" compress it.



BTW: #36 - easily fixed - make your app write to a fixed place on ms0:/ (e.g. ms0:/PSPRadio/). Things like AOTM already do this.

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# No...Sturmeh 2006-04-10 20:15
This is not a good idea, it WILL cause much confusion, don't you guys understand that everyone does it?



Why must they be ISO, why cant u make ur own damn format, arrgh!



Plus this was originally Fluff's idea from PSix, its in his ollld notes, so yeh, meh.



Danzel was going to make something similar to this in the future... ( With a use. )

Reply
 

 
# this program for shrinking?Guest 2006-04-10 22:41
Can this program be used if u want to shrink your (legal copy) of GTA (for example)?

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# Justin B - you dolt.Guest 2006-04-11 03:40
Justin B.



• You are ignorant.



• You are in-informed.



• You are a proponent of the DMCA.



• That makes you evil.



• That aligns you with powers that intend to cease the free spread of information on the net.



You, my friend, are the enemy.



The DMCA is not only a farce, but against basic civil rights. Its a shame nerds did not catch onto this evil act while it was being blindly passed by the government.



Guess what? I play backups of my games. I dare you to convict me. DMCA won't hold water in court of law. I eagerly anticipate when a real case will test this act - and promptly find it unconstitutiona l.



You got a problem with this view? Come and see me. jp -at@at- jefte.net. I refuse to "register" just to post a comment.

Reply
 

 
# HahahaGuest 2006-04-11 05:01
Tore him a new one!!



Even after proof that iso is not a compression format but a container,i gave up trying to tell a kid whats right.I`m 36,but i like my news articles to be correct.

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# CompressionGuest 2006-04-11 07:45
Hmm...



I wonder if it would in fact "compress" it, due to this reasoning:



Normally when you store files it uses a certain number of sectors. Depending on sector size and file size, you can often waste a lot of space in the case where the file size is much less than the sector size. Say for instance the sector size is 1K, and you have 500 .5k files -- you will be wasting ~50% of the space on the storage medium. Now, if you were to concatenate all those files (like putting them into an ISO file), you would only waste the tail end of the last sector. In this case you'd probably only be wasting ~1% of the space.



At least, this is what I think. Anyone care to comment?

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# if you were to concatenate all those files (like putting them into an ISO file)Guest 2006-04-11 09:58
Regardless of how big or small the file is,it is put into an iso "container" where each and every file retains all headers/data,so no it doesn`t compress.

Buy a pack of m&m`s,spread them out over a table...then collect all the m&m`s and put them into your lunchbox.Did you compress the m&m`s? No,you put them into a container with no compression and all the ineffciencies of each m&m.



Compress each m&m before you put it in the lunchbox,it still equates to no compression by the container (iso).

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# does isos work in 2.6?????Guest 2006-04-12 13:17
in dont know soplease tell me and if they do im so lucky because i live in mexico=D f**k you dcma

Reply
 

 
# commentcapagotks 2006-04-27 11:57
the idea of this is to shorten transfer times (PC to PSP via USB) and use it with an iso loader

Reply
 

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