How to Update T-Mobile Samsung Galaxy S3 SGH-T999 to Android 5.1.1 Lollipop SlimLP [AOSP] Custom ROM [Simple Steps]

T-Mobile Samsung Galaxy S3 SGH-T999 users will be very happy after reading this post. According to Perseus, Android 5.1.1 Lollipop SlimLP [AOSP] custom ROM is released for T-Mobile Samsung Galaxy S3 SGH-T999. Previously, has published the tutorial for updating Boost Mobile Samsung Galaxy S3 SPH-L710R to Lollipop 5.1.1 using LiquidSmooth v4.1. The tremendous news is that SGH-T999 owners can now install SlimLP [AOSP]. is going to publish an easy tutorial for updating T-Mobile Samsung Galaxy S3 SGH-T999 to Android 5.1.1 Lollipop using SlimLP [AOSP]. No doubt, this is a tremendous news for the proud owners of S3 SGH-T999 who are eagerly waiting to test Lollipop 5.1.1 on S3 SGH-T999. SlimLP [AOSP] will allow you to use your SGH-T999 in a better way.

I am expecting that S3 SGH-T999 users will be able to install SlimLP [AOSP] safely without having issue after reading the easy tutorial written in SlimLP [AOSP] requires rooted SGH-T999, so it is crucial to root SGH-T999 before installing SlimLP [AOSP]. If you haven’t rooted SGH-T999, then you must do it as soon as possible. Well, You must install CWM recovery on T-Mobile SGH-T999 before installing SlimLP [AOSP]. I forgot to say that the proud users of SGH-T999 can install SlimLP [AOSP] effortlessly after unlocking the bootloader.

If you aren’t happy with previous firmware, then you may install SlimLP [AOSP] on SGH-T999. SlimLP [AOSP] will allow the proud users to use Lollipop 5.1.1 on SGH-T999. recommends that S3 SGH-T999 owners must take a backup of their data including pictures and videos before installing SlimLP [AOSP], otherwise all their data including pictures and videos will be deleted from their SGH-T999.

Below are the easy instructions for installing SlimLP [AOSP]. will not take responsibility if SGH-T999 got broken during the installation of SlimLP [AOSP]. SGH-T999 battery must be above 99 percentage before following this tutorial.

How to Install Android 5.1.1 Lollipop SlimLP [AOSP] on T-Mobile Samsung Galaxy S3 SGH-T999 [Simple Steps]

1. It is necessary to download SlimLP [AOSP] for SGH-T999.

2. Gapps must be downloaded for phone.

3. It is the proper time to activate USB debugging.

4. It is the time to attach phone with desktop.

5. It is necessary to send SlimLP [AOSP] to SGH-T999.

6. It is the time to power off your phone.

7. It is the time to remove the USB cable from your phone.

8. It is the time to put phone into Recovery Mode.

9. It is the time to tap “wipe data/factory reset” on phone.

10. It is the time to tap “wipe cache partition” on phone.

11. It is necessary to click “install zip from SD card” on phone.

12. It is necessary to choose SlimLP [AOSP] on SGH-T999.

13. It is necessary to install SlimLP [AOSP] on SGH-T999.

14. It is the time to go to the main menu on phone.

15. It is necessary to tap “reboot system now” on phone.

16. It is the time to wait until phone reboots.

After your S3 SGH-T999 is restarted, you can enjoy SlimLP [AOSP]. If you are facing problem during the installation of SlimLP [AOSP] on T-Mobile S III SGH-T999, then don’t hesitate to write about your difficulty in the comment section.

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