CWR and stock rom? topic

Hi,

Please can someone help with this.

I have my z1 with CWR and CM11.

I want to return to the stock sony rom (to use screen mirroring)

Can I do this without removing CWR?

Kinda thought I would find a sony ROM in a zip (like cyanogenmod updates) that I could copy over to SD and install from CWR. But all I can find is ftf files that need flashtools.

Help greatly appreciated

Thanks