Android One Phones Get Marshmallow (Android M) Update

Google has maintained an impressive track record when it comes to speedily updating the Android One phones that it's designed with various partners in emerging markets. One of our readers was kind enough to track down a handful of links for over-the-air updates to Android 6.0 for these phones, in case users are tired of waiting and want to update their phones manually. To flash these OTA files in recovery, you need to be on the latest Lollipop build (LMY48M) with unmodified software. 

Requirements:

• Latest Build (LMY48M)
• Android Marshmallow Update File.
• Unrooted Phone with Stock Recovery Installed.
• BootLoader Must Be Unlocked.

Android One Marshmallow Update OTA link

list of Android One Device get OTA update

• Karbonn Sparkle V (India)
• Micromax Canvas A1 (India)
• Spice Dream Uno (India)
• Symphony Roar A50 (Bangladesh/Nepal/Sri Lanka)
• Cherry Mobile One (Myanmar)
• MyPhone Uno (Philippines)
• Mito Impact A10 (Indonesia)
• Nexian Journey One (Indonesia)

How to Flash & Install Android One Marshmallow Update

1) Manual Method

1. At First, Download Android Marshmallow Update File According to your Device from here above give link. don’t download different Files, it may cause trouble for you. & also don’t try above files in your Android Phones it may harm your Phone at high level. 
2. After That, Put Zip File in your Sd Card in any Folder, According to your Choice. Put Zip file in Root of Sd card is recommended. & Turn Off your Mobile Phone from power menu normally.
3. After Your Device Fully Turn off &
4. Turn it on By Press & Hold Volume Up + Power Button,
5. Hold it until you Get a Screen, Which have a List of Menu.
6. Now, There you will see options to reboot into Recovery / Fastboot modes etc. & Select Recovery mode from here.
7. Navigate to recovery mode with Volume Up button & press Volume Down Button for Select Recovery Option.
8. You will see Android Logo Picture. Just Hold Power Button & Press Volume Up Button & Leave both buttons now.
9. Select Install Update from Sd Card option.
10. Select Downloaded Zip File & it will start Flashing Process. It will Take some time, It may take more than 10 minutes in some cases.
11. After It Show Success Message, You are Done. 
12. Now Reboot your Phone & you are Running Android M In your Android One Smartphone.Note – First Boot May Take More Than 10 Minutes.

2) OTA Method (Working in Some Devices)

• Open Your Phone, Setting & Click On “About Phone“
• Click on “System Updates” & Check for Updates, If available Then Update It
• Else Goto Settings – Apps – Clear Data of Google Play Services Framework
• Check for Update Again & Again By Repeating 3-4 Steps.
• You will Get The Update, & Update it

Video Prview

i own Micromax A1 so Video prview for android one