To quote: PS3 JailBreak is awesome, especially because it works on my phone decided to tinker with some of the PS3?s files, xRegistry.sys in particular because it holds important things like debug mode switches and bluray/dvd region, along with your PSN login details (unencrypted!) and other little tidbits.
+ Changed the setting label to readonly textbox
+ Added trimming of null bytes to setting values
+ Added Wikitext exporting (not much info)
+ Added text file exporting (loads of info)
* Fixed a bug on the first entry, i don't think it needs to be loaded, so that fixes it
+ Sortable columns
+ Integers are now output as hex
+ Added a check to make sure file is loaded to everything
+ Added Halp! menu for some things people might not know about
Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!
For example, you can swap X/O buttons on the PS3 Controller using it as follows:
Use FTP to download /dev_flash2/etc/xRegistry.sys (create a copy just to be safe)
Open with xRegistry.sys Editor
Change the value of setting/system/buttonAssign from 00000000 to 0000001 and click save
Save the file and upload it to /dev_flash2/etc/xRegistry.sys overwriting the existing file
This will permanently change the button layout, no need to go through this process again unless you want to revert back to the original button layout.
Among other things, likely region-free DVD and Blu-ray but time will tell for sure.