Card brush, as its name implies, is to upgrade the system through memory card. In the early days of Android system, because the memory of most mobile phones is relatively small, it is necessary to use an external SD card to store photos, music and so on. Because the ROM brush package is relatively large, it is necessary to put the ZIP brush package into the memory card in advance, and then brush the system in through the recovery of the third party.

Advantages: it is convenient and simple, and the brushing method is universal, and it will not destroy the underlying data of the mobile phone (so theoretically, swiping the card will not brush the hardware);

Disadvantages: It needs to be restored by a third party, and individual brands or models need to obtain ROOT permission in advance;

Internal structure of card brush packaging

Generally, the card brush package format is a compressed file of ZIP type. After opening, you will see folders and files such as system (system apk file), META-INF (signature information), boot.img (kernel)! Brush Wizard, Zhuo Dashi and other one-button brush tools should all belong to the card brush category. Just push the brush package to the mobile phone through the tool, and then automatically brush it into a third party to restore the automatic brush.

Note: HTC, Huawei and other official ZIP format brush packages and the third party brush Bao Butong in general forums. Please refer to the official tutorial for details.

The line brush is connected to the computer brush through the data line, which is generally suitable for official brush bags. For example, Samsung has brushed KIES and ODIN, HTC has brushed RUU, and Sony has brushed flashtools. It has various formats: Samsung's. Tar, .md5, Sony's. Ftf, HTC's Exe etc.

Advantages: the bottom layer can be repaired. Generally, the bootloader and baseband can be directly upgraded during the upgrade process, and the official brush package can be used to save bricks when the card brush fails.

Disadvantages: the operation steps are complicated, and the debugging of the brushing tool is complicated. The brushing package must correspond to the sales place of the mobile phone, and problems in the brushing process may cause the mobile phone to be irreparable.

Generally, when the mobile phone is not turned on, it is recommended not to use a wire brush when brushing your teeth. In order to avoid operational errors, the mobile phone cannot be repaired!