N950F u10 not detect sim 1 and need eng EFS

[syria4soft.com]

HELLO
i have n950f u10
i try to make imei repair for it
i do that with z3x 40.2 in Nov 2019
then i make patch cert and every thing done and network working
after that i try to make the phone double sim because its 1 sim
i go to g935f in z3x and press Set SIM Count Double SIM
then the phone become realy tow imei but second imei its 000000000
i repair second imei and every thing done
BUT
when i put sim 1 the phone cant see it and ask me to put sim
and when i put sim 2 in phone its work
but sim 1 not working and now showing
i try to reback the to one sim with g935f and press Set SIM Count Single SIM
the phone become Single sim again but also The phone does not detect SIM 1
i download ENG EFS U10 from this link
https://support.h a l a b teck/index...load&id=238327
N950FD U10 UA EFS (ENG EFS) remove payjoy rent a center fix mount efs

and write it to phone in download mode but same result The phone does not detect SIM 1
i thing the ENG EFS File not true or has problem realy i dont know
i try to write many EFS s but all time i fail to can let phone detect SIM 1
i write COMBINATION_FA71_N950FXXUAATD1 to phone but same result

finaly i give N950FXXSADTB1 this firmware to phone but the phone Does not complete the operation and stops at the first logo
after that i write root file to phone and the phone back alive again but same result ... The phone does not detect SIM 1 . and any thing about securety not working ....
i sure the problem its software not hardware but i don't know what must do
i reserch for any efs for n950f u10 but i don't find

so i think all what i need good EFS FILE U10 pulled from phone same version
or good and true ENG EFS U10

so please gude me what can do to fix this problem

the customer force me to buy hes phone if the problem not SOLVED or i should buy him a new phone same model .

[CHANDARAKK]

i am bad englis i ask u befor process any u have check sim1 work or not?