Google recently started rolling out Android 6.0.1 Marshmallow OTA update for it’s Android One devices along with it’s Nexus series. Most Android One devices have already received the update and we have the upgrade tutorial ready for all the One devices. The devices that saw this firmware upgrade include Symphony Roar A50, Micromax Canvas A1, Cherry Mobile One, Spice Dream Uno, Evercross One X, Nexian Journey One and more.

As seen earlier, Google has been rolling out Android 6.0.1 Marshmallow update to it’s Nexus devices. Though the OTA update isn’t big, weighing around 75 MB, it comes with some essential bug fixes and stability improvements. Following the Nexus 6P and the Nexus 5X that received the update yesterday, other Nexus devices like the Nexus 9, and Nexus 7 have received the update yesterday.

You can manually check the updates from the Settings app. Go to Settings> About Phone> Software Information/Updates. Tap the updates option and check if the update appear on your device. If you don’t see any action in there, then go through the methods listed below.

For now there are two methods to install the OTA update viz, using stock recovery and using adb sideload. However, as soon as the TWRP flashable OTA link is available, you can use TWRP to upgrade your Android One.

Before we begin verify which firmware you are coming from and flash the OTA accordingly. The MMB29K is the latest Android 6.0.1 Marshmallow firmware for the Android One.

Warning: We at DroidViews won’t be liable for any damage to your device whatsoever. A full backup is highly recommended as it will wipe all of your app and system data. Reader’s discretion is advised.


Method 1: Install Android 6.0.1 Marshmallow OTA Update on Android One Devices with Stock Recovery [OTA]

  1. Make sure you do not have any security updates available for your phone prior to Android 6.0.1 Marshmallow. If available, apply these updates to your phone.
  2. Download the OTA zip file from the download section for your device. Verify the build number you are coming from.
  3. Transfer the OTA zip file from your PC to your phone’s storage or SD card if applicable. Place the file where you can easily locate it.
  4. Now, you need to boot your Android One device into Stock Recovery mode. To boot into recovery, restart your device and press the Volume Down button while booting up. Or you can try Step 3-4 in next method or refer to the note given below Method 2.
  5. Once your phone boots into Recovery Mode, Select Apply Updates from phone’s storage and navigate to the OTA file you just saved on your phone. Use the volume keys to navigate and power key to confirm the action.
  6. The installation process will start on your device and take a few minutes.
  7. Once the installation is completes, it will automatically reboot. Otherwise, go back and reboot to system

If after this update the system does not boot, a factory reset might just work. If this method works for you then you can enjoy your new firmware. However, if it fails or gives an error, then refer to method 2.

Method 2: Install Android 6.0.1 Marshmallow OTA Update on Android One Devices with adb sideload [OTA]

This is another method to install OTA updates. To make this method work, you need to setup adb environment on your PC. You need to sideload the updates manually to your system.


  • Set up ADB and Fastboot on your computer. You can install the full Android SDK package from Google through this link, or get the quick adb and fastboot installer from here. For Mac or Linux OS, click here.
  • Install latest Android One USB Drivers on your computer. This is important to detect the phone.
  • Open Settings> Developer options and enable USB Debugging on your device. To enable developer options, tap the Build Number multiple times (approx. 7 times) in About Phone.

Installation Instuctions

  1. Make sure you have setup ADB and Fastboot environment on your PC. Download the OTA package and place the file in the same directory where the adb is installed.
  2. Power off your device and keep it unplugged from your PC.
  3. Boot into stock recovery. To do so, press and hold volume down and the power button for 5-6 seconds. (Refer to the note given below this method)
  4. Now on the next screen, select the stock recovery option which will boot you into the recovery.
  5. Once into the stock recovery, select the option apply update from adb.
  6. Now plug in your device to the PC using a USB cable.
  7. Navigate to the location where your adb and fastboot is installed on your PC. While the folder with adb and fastboot files is open, hold shift key on keyboard and right-click on an empty space and select “Open command window here” option to launch a command prompt window.
  8. Now check your adb connection by issuing the following command. It should return device information. Otherwise, you need to make sure your drivers are installed correctly.
    adb devices
  9. Issue the following command to install the updates
    adb sideload
  10. This will flash the ota update to your system. “” is the name of the file. Make sure you either rename the file to “” or type the name of the file exactly with proper extension.
  11. Once the installation completes, reboot to system.

For Mac or Linux users, setup adb and issue the “./adb sideload” command without quotes.

Note to boot into recovery mode:

  • Power off phone
  • Press Vol Down + Power keys until you get into the select menu and then stop pressing buttons
  • Vol Down to Recovery and press power
  • Select Recovery mode in options (read instructions at the top of screen to select recovery option)
  • Wait for the device manufacturer logo and then you will see Dead Android with exclaimation mark and “No Command” written below it
  • Now hold Power then tap Volume up (follow the order properly) and leave it.
  • Choose update from ADB
  • Plug into Windows PC or Mac

How to boot into stock recovery using adb and fastboot? 

Alternatively, you can issue an adb code to boot into recovery while your device is connected to the PC. Issue the following code.

adb reboot recovery

Now that you have installed the OTA update, you can now enjoy Android 6.0.1 Marshmallow on your device. If you have a rooted device then you can flash the TWRP flashable OTA updates or simply download the full ROM zip file and flash it.

Method 3: Install TWRP Flashable OTA update on Android One [Use Flashable Zip Only]

  1. Download the flashable OTA zip file from the download section.
  2. Now transfer the zip files into your device’s internal storage. Place the zip file where you can easily locate it.
  3. Now reboot into Custom Recovery (like TWRP). To boot into TWRP, first turn off your device and then press and hold volume down and power keys at the same time.
  4. Although this is optional, it is recommended that you perform a nandroid backup. To backup your ROM, tap on backup option in TWRP and select all the partitions:System, Data, Boot, Recovery, EFS and swipe right where appropriate, to backup.
  5. Now go back to the TWRP main menu or home screen and tap on the install option. Navigate to the OTA file and select it.
  6. Swipe the confirmation button to proceed with the installation.
  7. Once installed, reboot to system.

Once you reboot you can enjoy your new firmware update.

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