comes with many incredible new enhancements and I wrote something about upgrading your OS with Sachesi some couples of days ago because the update was not available for all as of that time. But I have a good news for every blackberry 10 users, the update is now available; so if you’ve been unble to use Sachesi to upgrade… you can now do this with one click.


Why Should I Upgrade my OS to 10.3.1?

The latest OS 10.3.1 is superb with amazing features

==>Blackberry Blend: Blackberry Blend is a new simple way to effortlessly view your BB messaging and content on your computer or tablets.

==>Blackberry Assistant: it also comes with BB assistant; an incredible personal assistant intuitively controlled by voice or text.

==>Amazon Apps store: This time around, you need to wonder how to install android apps on your blackberry 10… It comes with a default Amazon Apps store with 1000’s of Android apps suitable for your bb10 for free.

==>Battery Enhancement: this will help boost your battery efficiency by up to 15%.

How Can I Upgade?

Before you begin, please back up your current version of OS (It's very important)
==>Go to Blackberry Appstore>>>The first message you’ll see will be your OS 10.3.1 upgrade message as seen in the image below.



==> Make sure you are connected to a wi-fi or you have your data enabled modem  plugged to your PC with Blackberry Link installed.
If you don’t have blackberry link, please download one here or use Wi-Fi directly on your mobile.
==>It will take some couples of min between 30min – 60min depending on the speed of your internet network.

Once you are done upgrading, your device will reboot and … Welcome


source - http://www.doronaij.com/2015/02/how-to-upgrade-upgrade-to-os-10-3-1-on-blackberry-10-device-without-pc/