A: No. FRP bypass does not modify the Knox counter or system firmware. Your warranty remains intact.
A: Yes, it works. FRP is independent of carrier SIM locks. download samfw frp tool 3.0 remove samsung frp one click
To successfully use to remove Samsung FRP with one click, you must prepare the following: not 3.0. Version 3.0 is outdated.
As of now, version 4.x or 5.x is likely available, not 3.0. Version 3.0 is outdated. download samfw frp tool 3.0 remove samsung frp one click