Ridge Racer 2 pbp demo playable on 2.71 hen/SE/devhook

[wraggster]

Dark Alex (http://www.dark-alex.org/) has released a new decryptor test that enables you to run the Ridge Racer 2 demo released yesterday (http://psp-news.dcemu.co.uk/psp-commercial-game-demos-39691.html) on v2.71 firmware, heres what he posted:


Method to run the pbp demo of ridge racer 2 for "2.81" in firmware 2.71 with hen C, in 2.71 SE or in devhook emulating 2.71 (i haven't tested the last one but it should work).

- Download decrypter test
- With some pbp utility, such as pbp unpacker, extract the files from the pbp. Put the extracted file DATA.PSP in the root of memory stick.
- Run the decrypter test with 1.50 kernel if you are in or in devhook emulating 1.50 if you are in HEN.

The decrypter test will output a file called "DATA_OUT.PSP in the root of memory stick. Using this file as the data.psp, rebuild the pbp. Change the text "2.81" with some hexadecimal editor to something <= 2.71

Ready. No you can play it. (of course if you are in 2.71, you only can execute it while hen is in memory).

This method doesn't work with other demos like world tour soccer, because, despite they decrypt, they may have some kind of protection and they crash. (not even locoroco decrypted runs).

Download the Decryptor Test Via Comments

[aries2k4]

DA is one amazing coder.
good news

[splodger15]

This is good to hear

[Baboon]

Haha ...Dark Alex is a legend! It's good to hear that DA is still on the case. :)


So will this trick work on my 1.5 via devhook? ...or is it just for 2.71se psp's?

[skater9269]

it looks like you decrpt with 1.5 kernal then play on 2.71 so should work on devhook for 1.5 psps.

[Kvonx]

it wont work!! light just flashes 2.71 se

[mnuhaily22]

This rocks I wanted to play this demo.

[EvilDooinz]

Im haveing problems also. Ive try useing PSP brew to extracrt the files and PBP unpacker to make a new EBOOT.PBP and to edit the PARAM.SFO but the outcome is a corrupted icon in 2.71 (devhook) then I tryed useing the pspsdk command pack-pbp and editing the PARAM.sfo with a hex editer XVI32 and the game is bootable but after a few seconds of loading it returns to the XMB with an error.:confused:

[EvilDooinz]

Never mind lol I forgot to rename the DATA_OUT.PSP to DATA.PSP :( works great now
thanks DA

[DPyro]

Works, but the demo was kinda short :(....

[Xiofire]

Great News! Will be trying this is a bit
-Xiofire

[teh_destroyer1138]

ok. i opened the RR2 eboot with pbp unpacker, and exported DATA.PSP to MS root. i used the decrypter program in 1.50 on DATA.PSP and got the DATA_OUT.PSP file. in pbp unpacker, i hit "new", added the info for ICON0.PNG, the edited PARAM.SFO, and DATA_OUT.PSP (which i renamed "DATA.PSP"). the eboot was created sucessfully, and i put it in PSP/GAME/UCES00422. i get a corrupted icon under 2.71 EVERY time. PLEASE HELP!!!


(i used pbp unpacker for everything except the PARAM.SFO file (this i used notepad for to change 2.81 to 2.71)).

[MUDD]

just play 1 and pretend its 2 and you ready to go .

[Kvonx]

For 2.71 se users after following the instructinos put it in the GAME folder, not Game150

[steven1980cad]

Ok Ive sorted it now, im using 1.5fw PSP.

I had to KXploit the decryptertest (so it ran on my PSP)

Use Pspbrew to extract.

Use PBP Unpacker to rebuild

And finaly Hex-editor XVI32.

A lot of work but it works fine devhook 2.71

Thanks Dark Alex.

[EvilDooinz]

Export all files from the game eboot with psp brew and save them in a folder named UCES00422 then open the PARAM.SFO with a hex editer NOT notepad or wordpad find the line with 2.81 and replace it with 2.71 and save. then copy the DATA.PSP file to the root of your ms and run the DecrypterTest after is ruterns to the XMB copy the file DATA_PSP.PSP to the folder you created UCES00422 delete/backup the DATA.PSP in this folder and rename DATA_PSP.PSP to DATA.PSP then with pspsdk (cygwin) or the command prompt type

pack-pbp EBOOT.PBP PARAM.SFO ICON0.PNG NULL NULL NULL NULL DATA.PSP NULL

copy EBOOT.PBP to ms PSP/GAME/UCES00422 and enjoy in 2.71

[Panini]

Could somebody please post a modified version that already works on 1.5?
For us noobz this whole process sounds a bit too complicated to get the demo working

[EvilDooinz]

doen't work in 1.5 just 2.71 Se or 2.71(devhook)

[teh_destroyer1138]

thanks EvilDooinz, it worked perfectly!:D i appreciate your help. i think the problem was that i didn't use a hex editor at first... then it was all ok!!

peace

[Rocksil]

can it work wid other 2.8/2.81 demo

[John Vattic]

All that for a demo?

:(

[Psyberjock]

I'll bet that the other games that decrypted but wouldn't load are all using PRXs that are new in 2.8. That's probably why they decrypt but then crash. Maybe if we edit devhook to load the new PRXs we'll get it to work.

[Amiga]

ive downloaded the modified version off another site :),and still i cant get it to load on devhook 2.71firmware??
:(

[samthegreat68]

hmmm i already upgraded to play the demo!!

but i also have another psp thats 1.5, so i have never used any of Dark Alex's apps but he sounds like an amazing coder to me!