http://www.oppo.com/sg/supports/announcement/test
Software to support dual SIM functionality is now available for R9 Plus
All three carriers in Singapore cease 2G services effective from 1 April, 2017.
We are pleased to announce that a new software is available for OPPO R9 Plus to support dual SIM functionality. After the successful upgrade, your OPPO R9 Plus will allow dual SIM with 4G+3G compatibility.
And software for R9 and F1s is coming soon...
【Software download link】
【R9 Plus】http://downloads.oppo.com.s3.amazon.../X9079EX_11_OTA_001_all_201703111638_wipe.zip
Below are the instructions on how to upgrade.
Upgrade instruction:
【Before you upgrade】
- Make sure to back-up your data before you start the upgrade 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 phone or micro-SD card to download the software installation package.
- The whole process of installation will take some time, please do not do other operations or power off your device during the installation process.
【Installation Steps】
1. Download the software package which correlates your model (R9 Plus, R9 or F1s) to the phone storage’s (or SD card) root directory (ie not in any sub-folders).
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 progress of upgrade (see figure below), which will take some time. Please do not do other operations or power off your device during the process.
4. After the progress bar is 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 setup the language, region and Wi-Fi. Upon completion of the guide, please check Settings – Dual SIM and mobile network – Preferred 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.