[Galaxy S I9000 Android Development] neldar:
This modification is

ONLY

for firmwares with Android versions >= 2.3 (gingerbread)!

What is BackLightNotification?

The BackLightNotification mod converts the touchkey backlights into a notification led. Any app that supports led notification is now able to notify you through the touchkey backlights.

What is modified?

The BackLightNotification mod replaces the kernel by a modified kernel and it also replaces the lights.default.so in /system/lib/hw/.

In detail: This kernel includes my backlight notification patch and additionally built-in ext4 and tun modules. (For lagfix and vpn support.) The lights.s5pc110.so in /system/lib/hw/ enables android led notification via backlights. This mod does not include any modified app. To enable led/backlight notification for an app/function see the Q&A "How do i enable notification for ...?"

What other features/fixes are included?

touchkey backlight timeout fix

tun support built-in

What are the differences to BLN for Froyo?

Led notifications in gingerbread do only work if the screen is powered off. You can not trigger a led notification while the screen is powered on and any led notification is automatically dismissed if the screen is powered on. This is a general "problem" of all gingerbread phones, this behavior is a design decision of the asop team. BLN control app has a workaround implemented for the internal call, locale & test notification.

What Galaxy S phones are supported?

The kernel in this thread is only for i9000 and i9000m (Bell Vibrant).

If you are searching for a kernel for your phone have look at this page: Supported phones by BLN (official list)

If your phone is not listed on that page, then you may ask someone who creates custom-kernels for that phone, whether she/he would like to include BLN. The patches are compatible to all already released Galaxy S phones.

Does this mod drain the battery?

No, that issue has already been fixed in the eclair build (in v0.9.8rc3, months ago).

Measurements on eclair showed, that an ongoing (static) BLN increases battery consumption by 0,18% per hour. The average battery consumption without BLN is 1,04% per hour, so an ongoing BLN results in an overall battery consumption of 1,22% per hour. And by the way: ongoing NoLed results in an overall battery consumption of more than 9,5% per hour. Please see the Q&A "How much does this modification affect battery life?".

For more questions and answers have a look at the Q&A in the second post.

Instructions for installation/update:

If you have any lagfix installed, remove/disable it before installing this BacklightNotification kernel.

New method for

rooted

phones:

SGS kernel flasher app:

If your phone is already rooted you can try the SGS kernel flasher app.

Just download&install the app and select any .tar or update.zip that you want to flash from this thread.

Old methods for

not rooted

phones:

Odin/Heimdall-method (recommend):

Download: i9000_jvh_BacklightNotification_v3.0_odin.tar (md5: e23eb9cda8d6289e00db2f4dc6442d2d)

start odin

select the .tar-file for PDA

power off the phone

boot into download mode (by pressing & holding "Vol Down" + "home key" + "power key" together,

when bootlogo appears, release the keys)

plug in the usb-cable to the phone

press start in odin (DO

NOT

select re-partition!!!)

wait for reboot

install the BLN control app to enable the bln function

see the Q&A "How do i enable backlight notification for ...? and install apps, if needed"

If the liblights is not properly installed you also have to apply this by recovery: bln-liblights-v1-install-update.zip

Update.zip-method:

Download: i9000_jvh_BacklightNotification_v3.0.1_update.zip (md5: d4e91cbb930fb0dc852c21e59b6f54ef)

copy the zip-file to /sdcard/

rename the zip-file to "update.zip"

power off the phone

boot into recovery mode (by pressing "Vol Up" + "home key" + "power key" together,

when bootlogo appears, release the keys)

apply update.zip (Vol Up/Down to select and Home key to apply -

you will see strange characters and a flickering screen, that is normal)

wait for reboot

install the BLN control app to enable the bln function

see the Q&A "How do i enable backlight notification for ...? and install apps, if needed"

Credits:

supercurio - for his awesome job on the repos