Go to Settings > About phone to verify the firmware version installed. Your Android One device is now running the latest Android 5.1 Lollipop update via stock ROM.

Once restore process is complete, just reboot the device into the freshly installed Lollipop OS.

Return to the main recovery menu and run advanced restore function to restore only /system and /boot.

This will help in preventing boot loop issues or any boot ROM related errors during firmware installation. To do this, go to the 'advanced' option and then click Wipe Dalvik Cache.

In Recovery Mode, perform Wipe Cache Partition and wait until the process completes.

Boot the device into Philz Advanced Touch Recovery or Recovery Mode, using the designated hardware keys on your phone.

Power off the phone and disconnect its USB cable from the computer.

You need to compile it to make it flashable or bootable.

Copy the downloaded Android 5.1 stock ROM zip file to the root folder on the phone's SD card. Answer (1 of 3): If you are talking about Android zip file then it's basically a RAW AOSP.

Connect and mount the phone's USB mass storage on the computer via USB cable.

Download the Android 5.1 Lollipop OTA zip file to your computer.

Before attempting to unlock the bootloader, back up any important files on the device. Steps to install Android 5.1 Lollipop stock ROM on Android One Devices Note: You can flash an existing build from the Android Continuous. you cope up with this, developers have already built recovery flashable zip file. Philz Advanced Touch Recovery with one click installer (v 6.57.9) Android 11 download is now available for many devices via custom ROMs.

This is stock Android 5.1 Lollipop build released by Google and not a leaked firmware.

Hence, verify the model number of the device before installing the OTA update. Installing the firmware on any other variant could brick the device.

The Android 5.1 Lollipop OTA update is only for Android One smartphones.

The bootloader of the device should be unlocked.

Ensure that your phone has above 80% battery charge.

Back up important data and settings on your device via recovery mode.

Users are advised to proceed at their own risk.

4) Boot into recovery mode: press and hold Volume Up, Power and Homeat the same time.

3) Unplug your device from the computer and power it off. IBTimes UK reminds readers that it will not be held liable for any damage to device, during or after the firmware installation. 2) Copy the downloaded ROM zip files to your Android SD card. Interested Android One users, who missed the OTA notification on their device or cannot wait for the official Android 5.1 release in their country or region can go ahead and install the same manually, using the step-by-step guide provided below. How to install Android 5.1 Lollipop stock ROM on Android One smartphones XDA

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