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Build I9100GXXLPY official firmware for international Samsung Galaxy S2 I9100G arrived. It’s an Android 4.0.3 ICS build that upgrade i9100G to Android 4.0 ICS from Android 2.3 Gingerbread. Galaxy S2 I9100G equipped with a dual-core 1.2 GHz Cortex-A9 and 1GB of RAM which is enough to run Jelly Bean. We expected to see an official Jelly Bean update soon for i9100G but before it first jump into Android 4.0.3 ICS official firmware update.
Read: Root Galaxy S2 I9100G on XXLPY Android 4.0.3 Official Firmware

Compatibility
This ROM and the guide below are compatible only and only with Galaxy S2 I9100G variant. It’s not compatible with other Galaxy S2 variants or with any other device. Check your device’s model number in: Settings » About phone.
The Android 4.0.3 build I9100GXXLPY which we are talking about was released by Samsung over KIES for Galaxy S2 I9100G excluding Chinese variants. If you find difficulties to update it via Kies then this article will guide you to flash official firmware manually. To flash the official firmware to Galaxy S2 I9100G we will use a tool called ODIN. However, in this process you will lose all your existing installed apps and personal settings. You should follow this guide carefully to properly backup your data that you can restore later.
Android 4.0.3 XXLPY Firmware Details:
PDA: I9100GXXLPY
CSC: I9100GDBTLP3
Version: 4.0.3
Date: 2012-07-31
Regions:
Warning!
We should not be held liable for any damage caused in the process of installing this official firmware update on Galaxy S2 I9100G variant. Although, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.
Pre Requisites:
Backup your data first using below mentioned instructions, so that if you lost any data you can recover it easily.
SMS & Call Log – Use SMS, MMS & Call Log Entries Backup & Restore App
Contacts & Settings – Use Android default backup options.
Images, Songs, Videos, Files – Copy to Internal/External SD card.
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names”
Important!
- Make sure your device have at least 80% battery power. [How to Check Battery Percentage in Android Device]
- You already have USB Driver Installed for Galaxy S2 in your PC. If not then you should download and install Kies.
- Make sure USB Debugging is enabled. [Guide]
If you follow everything that we mentioned above, you are ready to move into next stage of this guide where we summed up detail instruction on how to flash ICS I9100GXXLPY Android 4.0.3 official firmware update for Galaxy S2 I9100G.
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