To quote from his site (linked above), roughly translated:
"This program allows to simulate the dev_flash from USB. Allowing a Custom Firmware. We may modify the files of our new dev_flash (USB) as we please, without running the risk of throwing away the PS3.
It is a beta version, probably find bugs. I will continue working on it when time permits me. Remember that suffers no risk to the console. All that is changed the new dev_flash'll be doing really USB.
• Syscall PEEK and POKE.
1. Copy the "FTP server" the entire contents of the / dev_flash the USB (the root).
2. Copy the JaiC_USB_FIRM_LOADER.pkg also the root of the USB.
3. Install the package.
1. Insert the USB into the PS3.
2. Run USB LOADER FIRM. After a few seconds will return to the XMB. The new firmare is loaded.
• Improved network startups and various fixes
• Added internal HDD support (HDL format)
• Added the ability to choose the default menu (USB, NET, HDD games)
• Added the ability to use a valid disc ID for online games
• Added a fix for modchip freezing (maybe not all modchips)
• Many new game compatibility fixes
• Added IGR (In Game Reset) with a disable per game option
• Added Alphabetical Sorting
• Changed Settings categories
• Added page scrolling (R1/L1)
• Added support for user language files
• Network support...
202w ago - Today GeoHot has released sample PS3 Linux isolated SPU loader code for those with OtherOS to experiment with.
To quote: "Right now, I'm playing with the isolated SPEs, trying to get metldr to load from OtherOS. Interesting thing, I am not using the exploit. I always assumed the enable isolation mode register was hypervisor privileged.
It's not, it's kernel privileged, which means using hypervisor calls you can all get to it. So, get to hacking. Here is the code I am playing with.
I'm not that opposed to releasing the exploit, but I think the majority of you are going to be disappointed, even if you do get it working. Unless you have pushed the HV to it's limits, this exploit really isn't going to do much for you... yet.
So install OtherOS and start playing around. If people start coming up with convincing reasons why they need the exploit to go further, I'll release it. It's just a waste to release if people can't make use of it.
As far as the GPU goes, I have full access to the GPU memory space 0x2800... But without a driver, it's useless. 3D video card drivers are notoriously hard to write, look at the ATI and NVIDIA ones for linux. The best are still the closed source manufacturer ones.