can't root xperia play after update

[#1]

I update my phone from setting/about phone/software update now my version is 2.3.4 and firmware is .69 now how can i root this firmware?

[#2]

Ok i can flash my current 69 frimware to 42 frimware with flashtool this method needs root? Or not just tell me and tell me the method how can i flash my frimware with flashtool i jave download latest version of flashtool and i have download frimware 42 for xperia play r800i

[Nabeel]

Noopes, nothing need root

But if you wan't to root your mobile you need to be on 42

See the downgrading part here

Downgrading to Gingerbread