wt19i LwW. Using wotanserver to flash, I lost the warranty ?

[#1]

Hello.
I have a question.

I have a branded phone (live with walkman).
I want to debrand (flash with original SE rom) by this site/software:
http://www.wotanserver.com/en/sony-ericsson/se/live-with-walkman-wt19/unlock-tool/debranding-flash

If I make this, I lost the warranty???

[Uliwooly]

Anytime