Update Galaxy S2 To Lineage OS 15 Android 8.0 Oreo Custom ROM

Galaxy S2 users now can test the latest Android 8.0 Oreo OS on their devices by flashing the unofficial build of Lineage Os 15 custom ROM. In this detailed guide, we have some great news for Galaxy S2 users, because recently XDA Senior member rINanDO released this amazing custom ROM for Galaxy S2 variants which is based on Android 8.0 Oreo. The Lineage OS 15 is a popular Android Custom ROM among the Android community which is built from many ROMs with lots of interesting features and behind the screen improvements. This latest custom ROM brings all the official features from Android 8.0 Oreo through which you can play and modify your device. Remember that the ROM is not officially announced by Samsung but just a custom ROM. The ROM is the initial build of Lineage OS 15, so you may face some bugs but good thing is that you can get the experience of new Android 8.0 Oreo OS on your old device. Your Galaxy S2 should be rooted & have the latest version of a Custom Recovery like TWRP or CWM already installed to flash the Lineage OS 15 Android 8.0 Oreo custom ROM.

By following this simple step by step guide you can easily update your Galaxy S2 to Lineage OS 15 Android 8.0 Oreo custom ROM. The first Lineage OS 15 Android 8.0 Oreo ROM for Galaxy S2 is now available for download and ready to flash on your device. This latest custom firmware comes with many new features, changes, and customizations.  Before proceeding, don’t forget to take a full backup of all your valuable data. If you are interested in installing this Lineage OS 15 Android 8.0 Oreo custom ROM on your Galaxy S2 then go ahead and follow the given steps.

Galaxy S2 updated Android 8.0 Oreo Lineage OS 15 ROM 12


The Lineage OS 15 Android 8.0 Oreo custom ROM and instructions are given in this guide can be used only for the Galaxy S2 I9100. Check the model number of your Galaxy S2 from Settings > About Phone.


AndroidBlog will not be held responsible for any kind of damage occurred to your Galaxy S2 during or after the installation of Lineage OS 15 Android 8.0 Oreo ROM. Proceed at your own risk.


  • Create a proper backup of all your existing data and settings on the phone before proceeding to the installation guide using a recommended custom recovery.
  • Enable USB Debugging Mode on the Galaxy S2 by navigating to Settings > Developer Options.
  • Verify that you’ve correctly installed the Galaxy S2 USB Drivers on the PC.
  • The Galaxy S2 should be rooted with the latest version of a custom recovery like CWM or TWRP installed.
  • The bootloader of your S2 must be unlocked.
  • Make sure that the battery level of the Galaxy S2 is at least above 80% before going ahead.

Required Files:

Steps to Install Lineage OS 15 Android 8.0 Oreo on Galaxy S2 I9100:

Step No 1: – First, download Lineage OS 15 Android 8.0 Oreo custom ROM  for Galaxy S2 I9100 on the desktop of the PC.

Step No 2: – Plug your device to the PC using its USB data cable and mount its USB memory storage.

Step No 3: – Transfer Lineage OS 15 Android 8.0 Oreo ROM .zip file which you’ve already downloaded from the above link to the root folder of your SD card on the phone.

Step No 4: – Unplug the Galaxy S2 I9100 from the PC and power it OFF to boot into Recovery Mode.

Step No 5: – Power ON the device while pressing and holding Volume Up + Home + Power buttons at the same time to enter into Recovery Mode.

Step No 6: – While your device is now in CWM Recovery, perform wipe data/factory reset, wipe cache partition and wipe dalvik cache also by navigating to Advanced > Wipe Dalvik Cache.

Note: – wipe dalvik cache will help you to prevent boot loops and other errors while ROM installation.

Step No 7: – Go back to the main Recovery Menu and choose to install zip from SD card → choose zip from sd card.

Step No 8: – Navigate to the Lineage OS 15 Android 8.0 Oreo custom ROM .zip file which you’ve already transferred to the SD card of your device previously. Select the ROM .zip file using the Power button and confirm the installation to begin.

9: – Navigate to +++++Go Back+++++ once the installation is completed. From Recovery Menu, reboot your device by selecting reboot system now.

Your Galaxy S2 I9100 will be rebooted and may take about 4 to 5 minutes to boot for the first time after installation.

Done! You’ve successfully updated Galaxy S2 I9100 to the latest Lineage OS 15 Android 8.0 Oreo ROM.

Bhatti Junaid

He continuously writes tech articles and development code. Also, appreciates excellent food, exceptional coffee and great company. He has written 266 guides and other posts.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button