Erica Sadun


Erica Sadun. iPhone. iPod touch. Macintosh. and More.

Light v3

Erica Sadun | 8:04 pm | June 30, 2009 | 3.0, 2.2, 2.1, 2.0, Utilities

I’ve put up a new version of Light that bypasses the sandbox issues that were preventing the app from reading the previous backlight level. To use, you must be a dev and need to sign the app. Both the app and the signing script are here

5 Comments »

Comment by turkey | July 5, 2009 | 3:45 pm

“To use, you must be a dev and need to sign the app.”

Is this why some of the utilities included in the “Erica’s Utilities” package crash with a “bus error”? I am really missing Findme on my 3GS…

Thanks for providing these utilities!


Comment by marianmi | September 17, 2009 | 6:25 am

Hi Erica,
Under 3.0.1 (3GS) the backlight level is not restored — I tried and compiled myself a simple app that sets the GSEventSetBacklightLevel(float) when the applications exists, but no luck.
Any thoughts on that?


Comment by Erica Sadun | September 17, 2009 | 8:20 am

Unfortunately, Apple no longer allows read access to the data so Light cannot find out what the current light level is before brightening. Still looking for a work-around


Comment by marianmi | September 19, 2009 | 1:46 pm

I’m not sure that is the (only) problem. I just tried setting the brightness level in the unload or terminate method to a fixed value and it did not work. Just try setting to 1 and then to 0.25 in the exit function, see if it works.


Comment by marianmi | October 15, 2009 | 9:57 am

You are actually right. com.apple.springboard.plist is unreadable.
I change the file attributes to 777 then run an app that tried to read the file, see what happened:

miPhone:/var/mobile/Library/Preferences root# ls -lah com.apple.springboard.plist
-rwxrwxrwx 1 mobile mobile 2.6K Oct 15 23:47 com.apple.springboard.plist
miPhone:/var/mobile/Library/Preferences root# ls -lah com.apple.springboard.plist
-rw——- 1 mobile mobile 2.6K Oct 15 23:48 com.apple.springboard.plist

The permissions were restored when trying to read it… One workaround probably is to copy the file then read the backlight from the copy …


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