Download Android 6.0.1 Marshmallow for Desire 820 [Software Number 3.17.720.3]

HTC Started roll out of Android 6.0.1 Marshmallow firmware update for Desire 820. The update carries software number 3.17.720.3 and contains multiple improvements with latest security patches, Doze Mode, Now On Tap, Sense 7.0 and much more. The update is live via OTA and you will be receiving the update notification anytime soon, but if you are getting impatient for the 3.17.720.3 update for Desire 820 then do a simple single step task to manually check for the OTA. Stay update with us, we will grab the firmware file for you and will show you the complete process to install the Marshmallow update on your Desire 820 manually.

How to install latest Android 6.0.1 Marshmallow 3.17.720.3 firmware on Desire 820

To update Desire 820 on official Android Marshmallow you don’t need to download multiple file for it, just you need your device and the working internet connection. You must also remember that OTA process works only on Stock devices which means your device is no longer rooted while you searching for latest firmware via OTA. If you think your device is rooted then don’t waste your time switch to alternative firmware update processes or if possible un-root it and then give it a try. But we don’t recommend you to get stuck in such a long un-rooting process just manually if the download link is available. If you think you are all set to go, then

Go to device Settings >> tap on About device >> Software updates.

Now tap it to check the latest available firmware. Upon it’s availability you will be prompted about the update, now what just tap “Download Now” to instantly download the firmware or “Download later” if you wish to download later. Some times it depends on the region too for example, if the update is released for a specific region but you are not present there it will take some delay until firmware update reaches that region

That’s it! If you have successfully updated your Desire 820 on 3.17.720.3 official Android 6.0.1 Marshmallow firmware please let us know. Or if you have any query you are free to ask, please give us +1 or Like to say thanks.

  1. Reply
    Arun Khandelwal May 16, 2016 at 3:53 am

    I’ve received the update notification and I tried to update android 6. But the download failed when it reached 99%. It says that the download is corrupted. I’ve tried so many times but the result is always same. I don’t understand what is it. What should I do? The download is around 1.06 gb.

  2. Reply
    Bridul Jani May 31, 2016 at 8:08 am

    I have downloaded the update 5 times.After the downloading it shows that the software is corrupted .
    Need solution to the issue..

    • Reply
      Archer May 31, 2016 at 8:14 pm

      You need to download firmware from the alternative link

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