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Fluff · Joined: 22 Apr 2005 Posts: 35

I've read over many posts and thought alot about the system itself, noticed a few things which led me to beleive that a section of the bios/firmware is not writable, or at least, is not written to by the official sony firmware updates,

firstly, X and O buttons on japanese and US system are different in that they are swapped over for menu navigation on the systems.

Secondly, if one performs a system 'factory reset' via the menu, when given the setup options, the japanese psp (even with a 1.50 US firmware updated to it), defaults it's options to japanese for language, and GMT+09:00 Tokyo, for time.

This does infact make me beleive that there is a small registry, or even a regional settings file somewhere on the flash chip which dictates where the psp was produced, which in turn tells the psp what default options to use, and what UMD movie formats are acceptable, which is unchanged by firmware updates at all.

Now i bring this up because i am not sure if we have or have not found this section of the flash rom, or if the kernel is masking it but its discovery could lead to the successful removal of regional restrictions for the UMD movie format, and possibly contain further features that are currently disabled such as the possibility of themes perhaps?

Any thoughts?

mrbrown · Joined: 17 Jan 2004 Posts: 1536

If you would've looked even at posts from yesterday, you would've seen us talking about the registry located in flash1. A search would've also revealed this. Good God, man, you just posted in a thread where we were talking about the registry!

Moving your post to off-topic since I'm unsure where you're going with this (it doesn't belong in the Exploiit forum in any case).

Fluff · Joined: 22 Apr 2005 Posts: 35

Sorry i was under the impression the registry on flash1 was used for 'profile' settings

mrbrown · Joined: 17 Jan 2004 Posts: 1536

IIRC, there's a "button_assign" key under "/CONFIG/SYSTEM/XMB" that is responsible for the key mapping (don't know if it's read-only). The updater accesses this key.

There's also theme related stuff, and all of the language, sound, and network settings. You may have to dig into the VSH to figure all of them out. sysconf_plugin.prx is the "System Settings" page, so that'd be a good place to start.