Extract the image on your computer. Connect your device to your computer over USB. Start the device in fastboot mode. You can also boot into fastboot mode using the ADB tool: With the device powered on, go to the command terminal and execute the following: adb reboot bootloader If needed, unlock the device's bootloader through your computer using the command terminal and executing: fastboot oem unlock 1.
Open a command terminal and navigate to the unzipped system image directory. LG Nexus 4. Google Releases Android 6. Nexus 4 Receiving Android 5. Google Nexus 5. Read detailed LG Google Nexus 5 review. Display 4. Choose a variant. Asus Google Nexus 7. More Asus Tablets. Asus Google Nexus 7 HTC Google Nexus 9. Do note that this is a general update tutorial.
It will work for any Android based smartphone and tablet as long as you have the compatible CM 12 Android 5. For downloading compatible CM12 update you just have to access the xda-developers official webpage. From there you can easily get the update that is compatible for your device. Then, you can return to this tutorial for following the guidelines from below. Of course a custom ROM must be implied as the steps from below are dedicated especially for this type of update process.
Now, CM12 is currently in developing stage, so only alpha builts of the firmware will be available. So, before downloading and installing Android 5. Due to same considerations, before applying the update, the best will be to save the current ROM that is running on your device.
Thus, by making a Nandroid backup you can do so by using a custom recovery image, such as CWM or TWRP recovery you can save and restore within a minute or less the ROM that you are currently using on your device.
Therefore, if CM12 will not be satisfying enough, you will be able to go back to stock Android OS without any other problems. It should be clear that CM12 is in no matter an official Android 5. So, the first thing to take care of is the root access that must be ensured on your Android device. In that matter you can use our general root tutorial that will work on any Android powered device. Moreover, a custom recovery image must be installed on your phone as CM 12 ROM will be installed through the same.
Once more, you can use our dedicated step by step guide for being able to learn how to install CWM recovery on your Android smartphone or tablet. After taking care of these essential operations you need to prevent bad things from happening. For example, you need to take care of the data that is stored on the internal storage memory of your device.
While using a custom recovery image for flashing Android 5. Of course a computer is required because you are about to complete a manual update operation. Moreover your Android phone or tablet and your device USB cable is definitely a must. On the computer you will use disable all the antivirus and other similar tools because security protection might prevent you from installing CM12 Android 5.
When the battery is low, your device might get shut down in the middle of the update process. These where its most important features:. Requirements and additional information:.
Requires flashing the factory image onto the device by means of Android SDK. The images provided in the download link correspond to Nexus devices. Before starting the installation process you should read the preparation info below: use this post only with the Samsung Galaxy Alpha International device. Since you've read all the info above you can now continue to the tutorial part of this post. How to flash Android 5. After you complete the download you can extract the archived zip contents on your PC.
Download Odin3 v3. Power down your Galaxy Alpha phone completely. Next, boot it in Download Mode.
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