Backup from my RN5

[abdelka]

Hi every body,
I have a new RN5 ai dual camera chinese version and i wanna flash it ( install global rom on it ), but before that i wanna to take a backup from it ( backup of chinese rom ) which already install to my RN5, so plz i wanna make a backup of the rom and not just a backup for the images , apps, SMS, .....; even i have to reinstall chinese rom on my RN5 in the future so i will have an image of the original rom (chinese rom) of my RN5.
thank you.

 

[badodoy]

You can have a full-backup image of the current rom if you have unlocked the bootloader and installed twrp.