Android 5.1 Lollipop
update Galaxy S2 I9100 and Milky way S I9000 to Android 5.1 Lollipop via OmniROM XDA

Galaxy S2 I9100 and S I9000 are amid the lucky few Android devices to receive the first e'er Android v.one Lollipop update, with due credit to the release of OmniROM from third-party Android developers.

The OmniROM offers the best Lollipop features taken from top Android custom ROMs such as CyanogenMod, SlimROMs and ParanoidAndroid ROM. Information technology is based on the original Android Open Source Project (AOSP), which brings the closest stock Lollipop experience just every bit in Google Nexus devices.

Those who wish to experience the latest Lollipop features on their ageing Milky way S2 can get ahead and install the Android 5.1 based OmniROM on their device, using the step-by-step guide posted below.

IBTimes UK reminds readers that it will not be held liable for any damage to device during or subsequently the ROM installation. Users are brash to proceed at their own chance.

Pre-requisites

  • The instructions given in this guide are meant for the international variants of Galaxy S2 and Galaxy S with model numbers GT-I9100 and GT-I9000 only. Verify device model number by navigating to Settings > About Phone
  • Ensure the telephone has at to the lowest degree lxxx% battery accuse to prevent unexpected device shutdown (due to bombardment bleed) while installing the ROM
  • Dorsum upwardly data and settings using a recommended custom recovery tool, like ClockworkMod (CWM) or TWRP, every bit information technology creates a complete image of the existing telephone setup. In Recovery, choose Backup and Restore and tap Fill-in
  • Verify right USB drivers for the phone are installed on the estimator (download USB drivers for Galaxy S2 or Milky way Due south I9000)
  • Enable USB Debugging mode via Settings > Programmer Options (if running Android iv.0 or above) or Settings > Applications > Development (if running Android 2.3 or earlier)
  • Ensure that the device is rooted with CWM recovery installed and its bootloader is unlocked

Downloads Required

Android 5.1 OmniROM for Galaxy S2 (GT-I9100)

Android 5.1 OmniROM for Galaxy S I9000

Google Apps for Android v.one Lollipop

Steps to Install Android 5.i OmniROM on Galaxy S2 GT-I9100 and Milky way Due south GT-I9000

Footstep 1 - Download OmniROM Android 5.one custom ROM for Galaxy S2 or Galaxy S I9000 on the reckoner.

Step 2 - Connect and mount the telephone's USB mass storage on calculator with the USB cable.

Footstep iii - Now, copy the downloaded OmniROM zilch file to the root binder on the phone's SD card.

Step 4 - Ability off the phone and disconnect its USB cable from computer.

Step five - Now boot the device into Recovery Mode by pressing and holding Book Up, Home and Power buttons together.

Pace 6 - Once the phone enters into CWM Recovery, perform a full data wipe task by clicking Wipe Information/Factory Reset. Use the Volumekeys to navigate between options and the Power button to select an option in the Recovery Mode.

Step seven - So, perform Wipe Cache Partition and wait until the procedure completes.

Step 8 - At present perform Wipe Dalvik Cache as well. To exercise this, go to the 'avant-garde' option and and so click Wipe Dalvik Cache. This will help in preventing boot loop issues or any boot ROM related errors during firmware installation.

Step 9 - And so return to the main recovery bill of fare and cull Install Goose egg from SD card.

Pace 10 - Now click Choose Zippo from SD card. Use volume keys to navigate to the OmniROM zip file that you lot copied earlier to your phone's SD card and cull it past tapping the Power push. Confirm the ROM installation on the next screen and the installation procedure will brainstorm.

Note: Repeat Footstep 9 and Step 10 to install Google Apps (Gapps) every bit well.

Step 11 - One time the ROM and Gapps installation completes, go to "+++++Get Back+++++" and select Reboot Organization At present in the Recovery menu.

The telephone volition now reboot and the first boot may take well-nigh five minutes to complete. So, delight be patient.

Your Galaxy S2 I9100 or Galaxy S I9000 is at present running the latest Android 5.1 Lollipop update via OmniROM custom ROM. Become to Settings > About phone to verify the firmware version installed.

[Source: Team Android – Galaxy S2 I9100 / Galaxy Due south I9000]