GT-I9100 1 country Android 4.1.2 (Jelly Bean)

Samsung Galaxy S Ⅱ I9100ZCLSG Firmware

Name: Samsung Galaxy S Ⅱ (GT-I9100)
Brand: Samsung
Availability: InStock

Samsung Galaxy S Ⅱ I9100ZCLSG is an Android 4.1.2 (Jelly Bean) firmware for CHZ. It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build I9100XXMS7: Android updated from Jelly(Android Bean) to Android 4.1.2 (Jelly Bean); bootloader binary raised from X (33) to Z (35), so after installing it there is no way back to older builds. A newer build for GT-I9100 is available: I9100ZSMSA.

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Android 4.1.2 (Jelly Bean)

OS Version

n/a

Build Date

n/a

Security patch

Countries

CSC codes

Z (35)

Bootloader binary

Bootloader binary Z (35). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.

All regional downloads

Pick your region (CSC) to download the matching firmware package.

Will it work on my device?

Paste your current build number from Settings > About phone (About tablet) > Software information, or the output of *#1234#.

MODEM/CP Version: I9100ZCLS4

Model	Region	CSC Version	Size	File name	Download
GT-I9100	CHZ	I9100OZHLSG	—	—

Device specifications

Launched withAndroid 2.3
Display diagonal10.8 cm (4.27")
Display resolution480 x 800 pixels
Display typeAMOLED
Processor frequency1.2 GHz
Rear camera resolution8 MP
Rear camera typeSingle camera
SIM cardsSingle SIM
Battery capacity1650 mAh
Weight116 g

How to flash I9100ZCLSG

Install Samsung USB Drivers:Download Official Drivers
Download Odin Flash Tool:

I9100ZCLSG has bootloader binary Z (35). Your device must run binary Z (35) or lower: it is the 5th character from the end of your current build number.
CSC: Use CSC for a clean install, to change the region (CSC code), to downgrade or to repair a device that does not boot.
HOME_CSC: Use HOME_CSC to update the same model and region while keeping your data. Back up anyway: a failed update can still require a reset.
The Download Mode key combo depends on the model: see all combos.

Full flashing guide

Beware: Manually flashing firmwares may brick your device. Use it at your own risk and follow our tutorial steps.

Frequently Asked Questions

I9100ZCLSG is Android 4.1.2 (Jelly Bean) firmware for Samsung Galaxy S Ⅱ, released for CHZ.

No. A newer build for GT-I9100 is available: I9100ZSMSA. Install it instead of I9100ZCLSG unless you need this exact version. The previous build was I9100XXMS7.

Download the package for your region (CSC) and unzip it. In Odin, load each file into the slot with the same name: BL, AP, CP (if the package has one) and CSC, or HOME_CSC to keep your data. Odin checks the built-in checksum of every .tar.md5 file before flashing. The Samsung Galaxy S Ⅱ must be on bootloader binary Z (35) or lower.

This build uses bootloader binary Z (35). It can be flashed on a Samsung Galaxy S Ⅱ running binary Z (35) or lower; if the device already has a higher binary, Odin stops with "SW REV CHECK FAIL". 2 other builds of this model use the same binary, so you can switch between them in both directions.