Question i9500 Network Solution

Hi All
I have an i9500 Mobile internatiol
i changed imei to be able to use Turkish Sim card and network /
i use this firmware: 5
in this only method to be able to use turkish network:
in this modem :Service Mode available. and network can register.
whenever phone boots.the network icon Disabled.
So i have to :
1- Diversity RX read value.
2- change service domain.
then network works normally . But sending SMS not possible.
1- is there any method to save or automate this procedure?
and.. where is the setting of Service mode being stored?
2- this procedure only works on :4.2.2 , reason?
3- a modem how can be patched > while there is no known method to unpack modem.bin ?

i will highly appreciate your replays and tries to help.
it is important for us here/