wallpapers! the silent killer?

[Fanjita]

whenever you put a wallpaper on in 2.0> you are writing to the fregistry! this means if you do it too many times your psp will wear out? also as proof when you downgrade and then look through the bios with file assistant or one of those programs there is still that wallpaper....this is bad very bad! this means that you are writing to the registry and in theory if someone was able to put some kind of code into an image you could use the wallpaper function to brick your psp...

but the question i pose is: is writing to to the registry too often with wallpapers dangerous?

Every time you set a wallpaper (with 2.0 firmware, or via PSPSet etc.) you're saving it to flash.

Flash has a limited lifetime in terms of the number of writes - so yes, you are reducing the lifetime every time you set a new wallpaper. Unless you're changing every day or similar, you're unlikely to cause any noticeable impact.

You're not going to brick your PSP via storing a wallpaper. To store the wallpaper, you have to view it first - and that's much more likely to be when any damage could be done by a malicious image.

[Cap'n 1time]

You're not going to brick your PSP via storing a wallpaper. To store the wallpaper, you have to view it first - and that's much more likely to be when any damage could be done by a malicious image.

which is exactly why your virus scanners tell you the Tif exploit is a trojan.. There are Jpeg exploits too.. but apparently sony wasnt dumb enough to use a lib from the mid 90s.

[Fanjita]

which is exactly why your virus scanners tell you the Tif exploit is a trojan.. There are Jpeg exploits too.. but apparently sony wasnt dumb enough to use a lib from the mid 90s.

No, virus scanners tell you that overflow.tif is a trojan because there once was a trojan downgrader. The TIFF actually had nothing to do with the trojan functionality, and has been used in all sorts of respectable homebrew since, so it shows a lot of false positives. Sadly the virus signature analysts don't really understand the ins and outs of PSP homebrew, so the current virus check is quite badly inaccurate.

There are many possible image exploits, very few of them could work on the PSP (even fewer on v2.5+ PSPs), and only two (so far, to my knowledge) that have been used to actually run code on the PSP (both of those are TIFF-based).