please keep the advanced stock kernel recovery package on sdcard to avoid bootloops!
newer kernels wont boot on older stock ROM or ROMs based on older FW, you will get bootloops!
This is in the first post.
lol.. maybe your unlocked had errors, check it:
1. go to phone app and type: *#*#7378423#*#*
2. then "Service Info" and "Configuration"
3. in Rooting Status, Do you have: "Bootloader Unlocked: Yes"? (If you have "Bootloader Unlocked Allowed: Yes", you don't have unlocked yet).
|doomkernel, doomlord, kernel, recovery, xperiaz2|