[Question] Kingzone S2 root ?

[woody4165]

So I've got the other S2 with original stock rom non rooted.
What should I do to make a backup of the rom?
Of course I cannot do the "fastboot flash" stuff since I don't have the rom package.
I've done the "fastboot oem unlock", but I don't know if I'm unlock now since "fastboot oem device-info" does not work "FAILED (remote: unknown command)"

I've done also the "fastboot boot recovery.img" and installed SuperSu.

Now I'm rooted.

And now, how can I extract the rom package if possible?

Thanks