[NEED HELP] NAND, IMEI, WIFI

[Hadie]

Hello folks.

After endless hours I was able to revive my S4 Clone MT6575 China Clone.
(NAND device)

But there are still many problems that I was not able to solve,
CWM is working but I cannot mount the internal Storage.

Android is able to bott, but:
IMEI not working (even with MTK Droid Tolls, IMEI cahnges one digit)
WIFI not working (Button turn off after turned on)
Camera not working
and the Homescreen Button is not working during android (but works in the cwm key test)

I am not sure what I need to change.
I think I have found a suitable backup for my phone, that i would like to try, but there is no system.img only a system folder.

Any ideas?
Thanks

[deanlee121]

you try a new rom maybe your missing drivers

[Hadie]

Any idea.how to convert a.system.folder so that.i.can flash it?