samsung g570f unlock done by me....
if your phone show this error Reading data... error
Security damaged (4 23) don't worry just write this file and unlock again your problem will be 10000000% solved
here is root file and modem file link
root file
https://www.4shared.com/rar/CUmKV2fJ...0F_Root_.html?
modem file
https://www.4shared.com/rar/yAHvpYbB...by_kusht.html?