Originally Posted by TheRavenblue
Will i lose my root if i do that?
yes. (& personal data also, so make backup) but root is a easy job (1min) you can root phone with ''e-root'' app. btw if u plan to use custom rom , then no need to root it all custom rom/kernel is prerooted....
if not you can extract kernel & try flashing i manually..
.../// LT18i /// LegacyXperia 4.4.4 /// baseband .77 ///...