Default [Q] How can i change mounting position in a rom??

Hi all!

I'm having some problems with the porting of a rom, my phone is a clone of the phone from which i'm taking the rom (My phone is NGM Legend 2 and the original is Blu Vivo 4.3) the only thing which is really different are the mounting positions of the internal memory.
In Blu Vivo 4.3 the system partition is mounted on /dev/block/mmcblk0p3 and the data partition is on /dev/block/mmcblk0p5 while in the mine they are mounted on /dev/block/mmcblk0p4 and /dev/block/mmcblk0p6.
I changed them in the updater-script so i'm able to install the rom, but i had to replace the boot.img with the one from my rom because the phone wasn't booting up, but i can't install any app from google play store (error 110) and any apk ("app not installed" error).
I would like to know if the problem are the mounting positions and if there is a way to fix this!

Thank you!