CS.RIN.RU - Steam Underground Community

NEW: This patch upgrades your retail GCF files with the latest update. Same procedure as the previous patch:

http://rapidshare.de/files/20726601/sin ... h1.7z.html


This program patches your preload GCF files into retail GCF files. Note that it doesn't crack Steam, you need other tools for that.

This is v3 of the patcher. It uses less RAM and also reports any missing file blocks. I've also created new patch files that should work with both first and second phase preloads.

Program:
http://rapidshare.de/files/20272352/sin ... y.rar.html

Patch files:
http://rapidshare.de/files/20280048/sin ... ly.7z.html

Usage:
- extract program and patches to same dir
- copy your sinepisodes gcfs into the same dir
- rename and copy the .new files into your SteamApps folder

If you get any "Patcher didn't find all data" errors, there should be created some .failed files in your dir. Upload them somewhere and give them to me, and I'll look into why it happens. If you don't have any .failed files after running the prog, it means everything went fine.

edit: Version 4 of the program, with source code. This will NOT help you if the program above gave errors! It's only for those who want to create their own patches and want to study the format of the patch files. Noobs, stay away.

http://rapidshare.de/files/20293679/gcf ... e.rar.html

nice i will test it...

_________________

v2 worked for me already

Thank you very much for this..I would really like to create such patches by myself

_________________
ℝ.

Nice

I second your opinion Ress! Great patch dormine, Thank you so much!!!

Also I'm playing with an extracted version (I used the Gizma Tool to extract the content from/(off?) the patched GCFs) and the PROViSION bug fix to play steamless, but everytime I launch the game and load a saved game I get this msg "Node Graph Out Of Date. Rebulding...", and when I exit the game I get this msg too http://img141.imageshack.us/img141/7517/debug6gh.jpg, I am not complaining but, Is there some way to avoid this messages other than buying the game?

Thanks!

_________________

v2 worked for me also... great work

_________________
♫

Will release the tools later today, just have to make them a bit more usable first

Nice patch.. But where the f**k did you get the decryption keys and the buildgcf.exe file from.? :S

_________________

Can i download the gfc somewhere ?

_________________

i have them, too

Could you create this kind of patcher for HL2:EP1?

buildgcf is my own program. The decryption keys are right there in your clientregistry.blob.



Gotta wait til HL2EP1 is released before that

yo, how does it works? what information is stored in .patch files? what algorythm it uses?

Damn...
1) ...nice job. Keep up the good work! If you can create a patcher for all new games, then we can preload stuff and decrypt it then. No more gcf sharing!
2) ...I deleted my preloaded gcf's already!

Just my 2 cents!

Will release source later, but until then:
GCFs are made up of a header, then a number of 8192 byte blocks.The patch file is a "recipe" for recreating a GCF - first the GCF header is stored, then for each block I've stored the MD5 checksum of that block. At the end is a collection of blocks that I know aren't in the preload.
What the program does: It first scans your existing GCF, storing the MD5 and position of every block in it, decrypting the blocks if needed. Then it rebuilds the GCF by looking at the MD5 table in the patch file, taking the block from your original GCF file if it's there, or taking it from the extra blocks in the patch file if it's not. If a block isn't in either of those places, it spits out an error message.