1, wrong recovery version.

It is impossible to brush an officially restored third-party ROM. The old version of Recovery is not compatible with some new brush scripts, which will lead to the failure of brush execution. You can search for CWM recovery suitable for this machine through Baidu, and then download it and brush it into your mobile phone with ODIN.

2. There is something wrong with the 2.ROM brush package.

The most common problem is the brush package, usually because the brush package download is not suitable for Samsung I9 100 model of this machine, or there is a problem with the ROM made by the maker of the brush package, and there is an incomplete download error in the process of downloading the brush package. Re-download the ROM package suitable for this machine, and it is best to verify it by MD5 to ensure the integrity of the downloaded file.

3. Power shortage

In the process of brushing, the brushing program cannot be executed due to insufficient power, or the mobile phone is automatically turned off due to insufficient power. Ensure that the battery of the mobile phone is sufficient, at least above 60%.

There is something wrong with the 4.SD card.

There is something wrong with some SD cards, which makes it impossible to read the brush package correctly when you brush the machine. Replace the new SD card.

5, brush machine operation is not correct

In the process of brushing, if there is an operation error, such as no double clearing, the data in the original mobile phone must be cleared before brushing into ROM, otherwise the system will get stuck in the boot screen after brushing.