Tips & Tutorials

Update Galaxy S I9000 to Android 4.1.2 JZO54K Slim Bean Custom Firmware

Android 4.1.2 JZO54K is now available for the Galaxy S I9000 Android phone as a custom ROM – Slim Bean. It is AOSP based and let’s you enjoy the latest Android 4.1.2 on your phone. You just need ClockworkMod recovery installed and you will be able to update Galaxy S I9000 to Android 4.1.2 JZO54K Slim Bean custom firmware using the tutorial below.

In this tutorial, we will tell you how to install Android 4.1.2 JZO54K Slim Bean on Galaxy S I9000 with complete steps using CWM recovery. Make sure you backup all the data as we will have to wipe your previous personal data and apps. Let’s begin with the tutorial below.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We ( or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Make sure you have installed all your USB drivers for the Samsung Galaxy S to connect it with the computer. Download Samsung Galaxy S USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

5. Remember, this is not an official firmware update. This is a custom ROM, based on AOSP release of the Android 4.1 Jelly Bean.

Now, let’s proceed with the tutorial on the next page and update Galaxy S I9000 to Android 4.1.2 JZO54K Slim Bean custom firmware.