You might be using Redmi or MI smartphones that has MIUI ROM, if you ever navigated to “About Phone” in Settings then there will be a lot of information. Firstly, we can see the version of MIUI followed by the ROM variant. Version is typically MIUI 7,MIUI 8, MIUI 9 and so on. This is really easy to understand but there’s more to it which we’ll discuss later. Now comes the ROM variant which can be confusing to some users who aren’t familiar with MIUI. Basically there are 5 types of MIUI ROMS, we’ll be discussing each one, how they are named and released.

MIUI comes in two main variant, i.e MIUI China and MIUI Global. As the name itself suggests, MIUI China ROM is available to the users who purchase Xiaomi smartphones in China. The Global ROM is installed on Xiaomi smartphones that are sold outside China. But wait, there are even more variants within the both MIUI China and Global ROM.

1.MIUI CHINA ROM

As we said earlier that these ROM come pre-installed only on Xiaomi smartphones sold in China, there are three more sub variants of MIUI China ROM. They are Alpha, Beta and Stable MIUI as follows

i) MIUI China Alpha ROM
Alpha ROM is a special MIUI version only available in China ROM, which is more updated than Beta ROM. In other words, it will have newer features than Developer ROM. These ROMs are available to only few Xiaomi devices and might have lot of bugs. Alpha ROMs can be highly unstable at times.

ii) MIUI China Beta ROM
Beta ROM also called as Developer ROM are more stable than Alpha ROM. Beta ROM’s are updated on weekly basis and they too contain new features. The usual update changelog and changelog preview you see on the forums are the changelogs for the Developer ROM. These ROMs are not recommended for users who have limited knowledge about MIUI. They do contain bugs just like Alpha ROM but are slightly less.

iii) MIUI China Stable ROM
Once the Beta testing is over, MIUI is released to the public in the form of OTA updates. These updates are monthly, bi-monthly, half yearly or even longer without a specific update frequency. The amount of time to release stable ROM depends on the time needed to solve bugs in Beta ROM. For users who have provided feedback using the built-in bug reporter application, you might find yourself receiving updates unavailable to others, these are called grey updates meant as a beta-testing platform for the public. This ROM is recommended for people who want a stable ROM.

 

2.MIUI Global ROM

Again there are two sub variants of MIUI global ROM, namely Beta ROM and Stable ROM

i)MIUI Global Beta ROM
Its the same as MIUI Beta China ROM, but only that it’s released globally for everyone. A person living in India can experience new and latest features of MIUI with this ROM. It does contain bugs which users have to report in-order to fix it. Once all the bugs are fixed it’s made available to public channel.

ii) MIUI Global Stable ROM
Last but not the least, MIUI Global stable ROM is the ROM which comes pre-installed in Xiaomi devices sold outside China. You get frequent updates as new features are made available.

Versions Of MIUI ROM

Beta ROM naming

Moving on to the most awaited section,Beta MIUI ROMs are named based on the calendar dates. All Beta MIUI ROMs including China and Global version name consists of 4 parts. For better understanding we have marked what each part indicates.

 

beta

The ROMs are named somewhat very similar shown above. The red highlighted part indicates the year, Blue indicates the month and Green indicates the day. Some common way of naming MIUI Beta ROMs are

  1. MIUI X.x2.x3.x4
  2. MIUI X Global x2.x3.x4 Beta
  3. MIUI X China x2.x3.x4 Beta

Where
X= MIUI Version, for example MIUI 7, MIUI 8 and MIUI 9 etc.
x2=Last digit of year of release, For example if the ROM is released in 2017, then the it will be 7
x3=Month of release, For example if it’s released in August, the it will be 8.
x4=Day of release

MIUI Stable ROM naming

The naming of stable ROM is completely different. For example the stable ROMs can be named in one of the following ways.

  1. MIUI X.x1.x2.x3
  2. MIUI Global X.x1 stable X.x1.x2.x3
  3. MIUI China X.x1 stable X.x1.x2.x3

Where
X= MIUI Version, for example MIUI 7, MIUI 8 and MIUI 9 etc.
x1.x2.x3 = stable ROM build number

 

stable

 

That’s all folks, hope you found this useful. We tried our best to explain you everything, in-case you still have doubts than feel free to comment.