If I use CF-Auto-Root-m0-m0xx-gti9300 to root my phone, will it show an exclamation mark "!" in the left upper corner when I boot into Recovery Mode?
Samsung Galaxy S3 has a flash protection that will place "!" whenever you tamper with the file system. This operation will void its warranty but you can bypass it using an application called Triangle Away. The program flashes your kernel by removing the red exclamation mark which will restore warranty and making it eligible for Software Updates.
