Help to port x32 to x64 with CPU x64 ability - Android Q&A, Help & Troubleshooting

Hi,
I’m asking your help because i’m getting lost, i explain :
I’ve got a Acer Liquid Jade S (Acer S56) with a MT6752 CPU, it’s currently on Android 5.1 and i want to « port » higher Android from another phone with the same soc.
I already tried in august and july to build my own rom for this device but i never did it before, it was my first « rom building experiment » and nothing so far, it’s too hard for me, there is no device tree at all so ^^’
The good thing as i already said, there is a lot of other phone with the same CPU like Lenovo K3 Note, Lenovo P70, Jiayu S3 with latest android version custom rom.
I ported a 5.1 stock rom from the Lenovo P70 and it’s work (but still 5.1..) because the rom was x86 and that’s the issue...
There is a lot of rom but they are all x64 and i only got a x32 rom with my Acer (the cpu is compatible x64, strange choice from acer).
So i’m asking, how can i port if i don’t have a x64 kernel and « x64 base stock file », like lib64, it is possible ? Acer guive the Kernel Source, but for Kitkat, i’m asking if there is no way to « upgrade it » to support higher Android version and add x64 compatibility, but will it work (probably with some bug but don’t care ^^) ?
Because i don’t have the lib for 64, I know it’s possible because i look myself on lenovo website and they provide Android 5.1 x32 and not 64. Someone ported the stock rom to x64 but i didn’t find how…
Can you please help me ? I know that phone start to be « old » but it’s good for me, i’m not a Android « gamer », just want most recent android because apps starts to be not compatible with 5.1
Thanks

Any idea ?

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Click to expand...
Click to collapse
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