Default XPERIA GO Sim Unlock help

Good morning, i'm sorry if im posting this in the wrong place.

I've been trying to sim unlock my xperia go following a guide here in this forum, but I can't get to the un_lock code as they say.. i even tried a bash script but it doesnt show neither the imei or the un_lock code. (I know how to get the imei tho). this is the guide i followed. I'm stuck in the "strings -n 8 /dev/block/mmcblk0p6" or the bash script (which works, but it just doesnt show any code).

Thanks in advance.