Go a google search with "unbricking galaxy s jig"
It can be use for xperia mini too.
It might be,battery suddenly empty. Its hard for phone to brick.Charge ur phone 1st at full... And choose the right baseband according rom prequistid. I b4 this rooted and installing CWM on this galaxy mini and the phone at samsung logo or samsung galaxy mini logo.
As on my condition,follow guide that been explained. If u have flashed the CWM, REBOOT. Then at samsung logo,press volume down,then u can access CWM. To avoid other probs, flash it with cyanogen mod. Or it maybe cant be loaded.
As far i concerned, for galaxy mini got 2 type of recovery. That is,
For me,choose tass recovery.
Sent from my HTC Vision with Doubleshot Rom
MK16i | Rooted | Android 4.0.4 | 4.1.B.0.431 FW | CWM Recovery | 100% Supercharged! | Unlocked Bootloader (Test Point)