Update Samsung Galaxy S2 I9100 to Android 6.0 Marshmallow AOSP firmware

Samsung has stopped official software updates for Galaxy S2. But users need not worry. The developers are still working on it. Recently, they have come up with a new Android 6.0 Marshmallow Rom. Yes, you can now update Samsung Galaxy S2 I9100 to Android 6.0 Marshmallow firmware.

The firmware is based on Android open source project developed by Slimteam. Slimrom is a custom Android firmware which is light in nature but rich in features. As it is a custom firmware, it may have lot of bugs. So, do not install this rom for daily use. Further, if you are ready to install Android 6.0 Marshmallow on Galaxy S2, do follow this XDA thread to get solutions for minor bugs in ROM. Also follow the below prerequisites to safeguard your personal data and to ensure successful installation.

PREREQUISITES

Check Device Model Number

It is vital to check device model number before rooting/unlocking/flashing process to ensure flashing compatible files on the device. The device model name should be Samsung Galaxy S2(GT-I9100). If your device model number doesn’t match with mentioned one, do not attempt the tutorial.

Samsung Galaxy S2 USB Drivers

To transfer firmware packages, it is to be connected with PC. For the PC to detect the device, it should have installed Samsung USB drivers. If you’ve not installed previously, download them form below source and install manually.

Download Samsung USB drivers

Steps To Be Considered

  • Enable USB debugging on the Samsung Galaxy S2 which lets the device establish a stable connection with computer via USB. You can do it by following the below mentioned path. In latest versions of Android, the Enable Debugging option will be hidden in depth of settings panel. You can follow our guide to enable USB debugging.
  • Rooting the device erase entire data on the device including internal SD card. So, make sure you create a backup of entire important data. If you are not familiar with Android backup process, you can refer our guide to Backup Android phone data.
  • Make sure the phone’s battery is at least 60% charged at the start up of tutorial. If battery runs off during unlocking process, it may turn your phone into brick. So, charge the device before tutorial.
  • If the device bootloader is locked, it is to be unlocked before rooting process. You cannot gain root access unless bootloader is unlocked.
  • To install custom ROM’s/Firmware the Galaxy S2 must be rooted and should be installed with Clockworkmod recovery/TWRP recovery. Perform this step if not done previously.

Are you sure you completed all the above steps? Yes, you can now get started with the Marshmallow installation process.

DOWNLOADS SECTION

Marshmallow ROM

Google Apps

GUIDE TO UPDATE SAMSUNG GALAXY S2 TO ANDROID 6.0 MARSHMALLOW VIA SLIM6 FIRMWARE

Disclaimer: Rooting/Unlocking/Installing custom ROMs and Kernels are not official methods. So, neither device manufacturer nor Droid Word team is responsible if anything goes wrong with your device during the process. This article is only for educational purpose. You can continue with the implementation at your own risk.

Update Samsung Galaxy S2 I9100 to Android 6.0 Marshmallow AOSP firmware

STEPS TO BE FOLLOWED

Step 1: Download Marshmallow ROM and Google Apps packages from downloads section to your PC. Do not unzip the packages.

Step 2: Connect Galaxy S2 to PC using an USB cable.

Step 3: Transfer the downloaded packages into the root of phone/SDcard memory.

Step 4: Once the transfer is done, disconnect the USB and turn off the Galaxy S2.

Step 5: Enter custom recovery mode on Galaxy S2. Don’t know how? Do follow the simple step below:

 Turn on the device by holding Volume up+Home+Power buttons together until you see the recovery mode.

Step 6: In custom recovery mode, you can view a list of options which are not available in Stock recovery. Among them, find and select wipe data/factory reset(In recovery mode the touch interface will not work. You can use Volume buttons to navigate and Power button to select). 

Step 7: Now perform a complete data wipe by selecting wipe cache partition.

Step 8: Once done, enter advanced options in recovery mode and select wipe dalvik cache.

Step 9: If you are done with all the above steps, you can flash the firmware package now. Select install zip from sdcard, navigate and choose the previously copied Marshmallow ROM package. Confirm the installation and do not interrupt the process.

Step 10: After completion follow Step 9 again and choose Google apps package in this case.

Step 11: Once the packages installation is completed, select reboot system now option.

That’s it! Your device now boots up running Android 6.0 Marshmallow. You have successfully Updated Samsung Galaxy S2 to Android 6.0 Marshmallow via Slim6 firmware. If you face any issues while following the above guide, do let us know through the comments section. We may help you out.

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