Default [Q] Flashed my e975 with Telstra firmware, though phone is vodaphone

I flashed my phone with the telstra official firmware .kdz off xda as it was the only .kdz i could find, I sent it off to warranty. Will this void my warranty, they have asked me a question via email if I flashed the phone using Telstra firmware.

The phones original firmware was vodaphone, have I voided my warranty?