Bootloader unlocked phone warranty serviced.

I've sent the phone to repair center for bad camera functionality (due to DRM removal from unlocking bootloader, which I haven't said that to sony), and the phone is now coming back to me.
According to the e-mail trail, the diagnosis found that screen needs to be replaced and perform a software update.
I'm still in high doubt that they'll somehow put DRM back into my phone but here's hoping. :p
Just wanted to share this if anybody had any case where people got DRM after warranty service.