Step 1:
Sanqing, Sanqing is to clean all the things in the phone. Many people do not know how Sanqing is really Sanqing, which is simply in the shutdown state. At the same time, press the power on key+sound up, and the power on will enter the cleaning interface.
Ps: (It is better to clean after experiment. Although it is said that you can brush without cleaning, it is easy to have various small problems. It is recommended to brush after three cleanings)
[Remember, remember, and make sure to back up. If something important is not backed up, it will be gone after three cleanings] Fans who don't want to lose data, please remember!
Step 2:
Move the downloaded card swipe package to the SD card (without decompressing it)
Note: Yes [card swiping package] Do not download the line swiping package
Card swiping address download: https://www.52z.com/soft/95915.html
Step 3:
That is to click the system update on the desktop
Then click the menu → select the card brush installation package
Find the card swipe package that was just moved to the SD card, click the card swipe package to update immediately
You can brush to V5 in three simple steps.
