XXBLH4 Android 4.1.1 (Jelly Bean) for Galaxy S3 I9300 is a leaked firmware for Samsung Galaxy S3 I9300 and now available for download. This firmware is an internal OTA build for Jelly Bean Galaxy S3, but now you can install Android XXBLH4 4.1.1 JB manually on SGS3. Complete tutorial on how to root XXBLH4 Android 4.1.1 for the Galaxy S3 will be released soon.
As you continue reading below, we will guide you through the complete installation process of XXBLH4 Android 4.1.1 on Galaxy S3 I9300 uses ODIN flashing tool. Let's continue with the tutorial below and don't forget to back up all your data. I9300XXBLH4 (JRO03C) is an internal Samsung ROM and is unbranded, which means that any I9300 user (unlocked) can install this ROM and experience the official Jelly Bean firmware.
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Disapproval: All tools, modifications or ROMs mentioned below are the property of their respective owners / developers. We (TeamAndroid.com) or the developer are not responsible if you damage or damage your device. We don't ask you to try this tutorial 😉
This firmware is a repackaged version of the official firmware to be installable from the Clockworkmod recovery.
Make sure you have installed all your Samsung USB drivers Galaxy S III to connect it to the computer. Download Samsung Galaxy USB S3 Controller! In addition to the USB driver, there are a few more things to keep in mind.
1. You must enable USB debugging mode. This helps connect your Android phone to a PC. See here: How to enable USB debugging.
2. Your mobile battery should be charged 80-85%. If your cell phone suddenly dies due to a battery, during flashing ROM or installing modifications and updates, your cell phone could die permanently. Look here: How to check the battery percentage.
3. Back up all the important data you may need immediately after updating a new ROM, or back it up just in case, you never know when an error occurred. See below how to back up your data:
You can also back up the data using Samsung KIES for your devices, but if you back up the data manually, you will get more options than you choose and it is very easy to move data on Android devices from various manufacturers, ie move Samsung Galaxy Note data backup to HTC One X.
4. Your cell phone must be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial to unlock the device.
Now let's continue the tutorial on the next page and update Galaxy S3 I9300 to XXBLH4 Android 4.1.1 official firmware