As for where to download: Go to Xiaomi Forum to find this post: "20 12 weeks * * Xiaomi mobile phone firmware update MIUIv4".

choose

"New version download"

then

Select the MIUI version you want to download.

Choose a card-brushing package around 170M m.

Just do it (MIUI2.3 must use a line brush)

The method of swiping the card is on this page: "Play Xiaomi mobile phone.

Detailed explanation of Xiaomi mobile phone brushing tutorial "

In this article

The fifth method is to use a card brush.

Note: The above is the brush package of Xiaomi mobile phone.

If you are another model, please go to MIUI forum to download the corresponding brush package.