Try unlock with semctool 33p
Chose com port, select model, enable "read all codes", baudrate 115200bps, pull out battery, connect cable, click "DO CHEAP SHIT USB JOB"
When it write "Switch phone ON"
Quickly put in battery.
Then look what prog write and do as it ask. Dont disconect phone before is everithing finished. For disconecting wait.
It will read all codes.
Then insert unacceptible sim card, turn on,
when is powered on type
<**< select network than input network code.
Whenever ask to power on phone just play with battery, out, in...
It will work.
For flashing I cannot remember that I try secure free tool.
I was flashing it with HWK, SeTool, GOT, Cruiser and other tools witch are not free.