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GeoHot PS3 Custom Themes Hack Demonstration Arrives

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249w ago - Today GeoHot has posted a few pictures (below) with the title "Custom Themes?" on the latest PlayStation 3 blog entry, however, no other useful details are available of the PS3 hack demonstration.

To speculate, it appears to illustrate modifying the PS3 GameOS XMB memory areas, but this was already known over a month ago when word first spread of the PS3 Hypervisor lv2 being dumped and reversed.

It's an RCO file edit, just like RCO edits on the PSP (almost same format too). RCO files are resource files for VSH plugins, live in the dev_flash, and aren't signed. To edit them on your system, patch your hypervisor to allow encrypted access to the partition (flash on old systems, hd on new), and mod ps3pf_storage. dev_flash is just a FAT partition, mount it in Linux and change what you'd like.

Nevertheless, it looks like progress is indeed being made editing and replacing an RCO in /dev_flash/vsh/resource/, although it would be nice if the information was made public so that other PS3 Devs in the scene could join in the fun.

From NDT: Le foto sono vere al 100% Ha modificato gli RCO dal dump della ram ma dato che non sono signed questo significa proprio poco. Si vede che stava cercando anche lui qualcosa da postare.

Rough translation: The photos are real 100% Changed the RCO by dump ram but since they have not signed this means just a little. One can see that he was looking for something to post.

Mathieulh: It's real, it has nothing to do with custom backgrounds, what he did was replace a rco file in dev_flash with one he edited (with a custom text in it).

To do that he had to mount dev_flash as rw because it is normally read only. You can do that if you know how to using his exploit under otheros.

As always, more details to come as they are available!

Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter, Facebook and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene and PlayStation 4 scene updates and fresh homebrew releases!

Comments 42 Comments - Go to Forum Thread »

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#22 - Inferis - 249w ago
Inferis's Avatar
It's nice to see another bit of a teaser peeking out. You can tell he just loves keeping people on their toes, and the whole "look what I can do and marvel at it" mentality. Can't blame the guy for being as brilliant as he is... although impatience is the key word here, and it would definitely move things along a lot faster if the methods and dumps were shared among the other capable developers. One can only hope it starts leaking out soon...

#21 - SCE - 249w ago
SCE's Avatar
Believe me if it was an easy thing, geohot wouldn't even bother posting it

#20 - skatomelato - 249w ago
skatomelato's Avatar
This is the start of a ps3 custom firmware... This is a chance of an RCO!!! If a developer replace all the system files with custom then we will have a cfw!!

#19 - hellospaceboy - 249w ago
hellospaceboy's Avatar
Like someone has said, I think its much more impressive if its not just an xml edit, and it is a hex string change. Either way its still progress.

#18 - saviour07 - 249w ago
saviour07's Avatar
I appreciate the little hints and tips, but this is something that has already been done. So progress/workload and experimentation (other than changing text) could move alot faster with a larger dev base.

Just hope that at some point in the near future that someone who has access to the lv2 dump will share.


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