Download the ROM in preparation for flashing the ROM to the phone。
1.This tutorial is intended for use with the Windows operating system environment. 2. This tutorial is intended for use with only the SAMSUNG Galaxy S III I9300 international version; at this time, the regional versions of the I9300 has not been tested, and therefore it is not recommended to use this tutorial for models other than the international version. 4.Please be careful when flashing the ROM. Xiaomi Corporation does not take any responsibility for problems caused by flashing. 5.This tutorial has been taken from an internet resource and reorganized officially. If there are any copyright issues, please contact the administrator. For more detailed information, please refer to the disclaimer
Download the latest MIUI ROM installation package for the Galaxy S III I9300. (If you have already downloaded the installation package, there is no need to re-download it.)
Download the I9300_tools.zip to the Desktop, and unzip it Download Now (size 814M，MD5：ecfe5710b76f95ad0285ac7f9c1b483e)
Prepare a space in the internal memory with more than 2GB of memory.
Do not extract the MIUI ROM installation package. Instead, copy it directly into the root directory of the internal memory.