How to install kitkat in oppo? I bought a smartphone in China, is an OPPO r5, the smartphone has the following settings:


4 GB RAM
Android version: 4.4.2
Kernel version: eight core MT6592
Compilation number: MTK 6592
Personal compilation version: A3SE_AX_CHT_MTZ_4G_V1.1_20141105114604


But when I tap in the android version appears JellyBean Logo (weird because 4.4 is kitkat), when i restore the phone, apears with applications extra and uses 3GB of RAM (without applications starting, and due to this the phone is very slow). The question is if i can install a 'pure version' of kitkat or jellybean version (also a mod) so the smartphone will be faster?
Note: Ir has been checked with antutu and cpuz, is an oppo adn it has an octacore and 4GB ofrece RAM
There are a few things which don't sound quite right.


4GB RAM - The Oppo R5 has 2GB RAM build in. 
"eight core MT6592" - R5 uses an Snapdragon SOC. MT6592 is an Mediatek SOC.
The Android version. It doesn't matter which version is shown in the system information. It's a simple edit in /system/build.prop. Everyone can write whatever they want.


With these things in mind I think you have bought a fake R5.
So can you change to Cyanogenmod? No. By installing the cyanogenmod for the official R5 you might brick your device as the kernel is not fitting your hardware. 

Link to the official product page of the R5