How to update Oppo R1X?
To update the Oppo R1X you need to install an alternate firmware (ROM).
If the device does not automatically update by itselves. You can use the new firmware for your smartphone.
You have to choose the firmware version and follow the instructions. If you have a trouble in update you can write about it in the comments below, we’ll help you.
Oppo R1X firmware update:
If you are looking for another firmware, you can write a comment below. We will solve your problem and give you a link to update the firmware.
Oppo update
There are three ways Oppo update:
- Using recovery (to update installed OS)
- Using Fastboot (to recover Oppo with Qualcomm SOC)
- Using SP Flash Tool (to recover Oppo with MTK SOC)
If you want to install a Oppo update using recovery – download the official update, reboot your phone or tablet into recovery mode and click “Install update from SD card”.
To install Oppo update with Fastboot – download and install drivers and ADB&Fastboot, download official firmware and flash it by instruction.
If your model is not listed, you can write a comment below. We will solve the problem and give you a link to update the firmware.
Read more 
kindly update to newer version the oppo r1x or oppo r8206. I cannot play other games with this old android/os version
There is no official updates for the Oppo R1X, if you want to install latest Android version, try to find custom ROM