[Q] Restore Z1 Compact to stock firmware before sending it for warranty repair.. help topic

Hello XDA!

I've ran into some hardware related issues with my Z1 compact (the earphone jack is glitchy) and i want to send my phone in for repairs.

The thing is i have a modded cyanogenmod firmware on it as i preferred it over the stock rom. I also have that clockword mod thing.

As you can tell i'm not very accostumed to doing these things and i was wondering if anyone would guide me on how to restore the phone to its original stock setting?

The phone is a swedish device so i would need the scandinavian versions i'm guessing, any ideas out there?

Thanks.