Oppo f1s android 6.0 marshmallow update Rom in india

How to upgrade 

( Update instructions )

<Before you upgrade >

              -   Make sure to backup your data before you start the update as all data will be wiped in the process.

-               Make sure there is more than 40% battery 

-               Make sure there is at least 1.5GB free storage space on the power or micro-sd card to download the software installation package.
-               The whole process of installation will take some time, please do not other operations or power off your device during the installation process.

< Installation steps >

1.       Download the software package which correlates your model (oppo f1s,1601 ) to the phone storage`s or SD cards root directory (ie not in any sub-folder)

2.       Go to files - All files - (click sd card if you have downloaded the package to sd card )- select the zip file -click update now. ( Figures below are shown as an example of SD card).

3. Your device will then reboot and display the process of the upgrade (see figure below ) which will take some time. please do not do other operation of the power off your device during the process

4.     After the progress bar complete.the phone will reboot and remain on the      OPPO logo for 3 to 5 minutes. please do not power off the device as this is normal.

5.    Once the phone is fully booted up, the standard start-up guide will show up to set up the language, region, and WI-FI. Upon completion of the guide, please check the setting -Dual Sim and mobile network type, and make sure you have selected 4G/3G/2G (Auto) as Preferred network type.

6.    And by now, congratulations, you have  successfully upgraded the software