[Q] can i use this ftf?

[pitchblack5691]

can i flash this firmware using flash tool to update my st15i?

http://forum.xda-developers.com/showthread.php?p=27367085

device details:
st15i (xperia mini 2011)
downgraded from .62 to .42 firmware.
LOCKED BOOTLOADER
unrooted

if yes, i'm planning to get root access by this method
http://forum.xda-developers.com/showthread.php?t=1695514
will it work?

can i do it with locked bootloader or will it brick my baby??
please experienced members and devs help me!!

thanks in advance

 

[thegearhead]

Wrong forum, this is xperia x10 mini (e10i), not xperia mini (st15i)

 

[pitchblack5691]

mod moved it to this forum