How to find out what firmware was on the Xiaomi phone before the update

Many users of the Xiaomi ecosystem face an unpleasant situation: after an automatic update, the system begins to work unstable, discharges faster or familiar functions disappear. At this point, there is an urgent need to return to the previous version of the software, but how to do this if you do not remember the exact build number?

The problem is that the standard settings menu only shows the current version of MIUI or HyperOS, hiding the update history. However, the Android operating system on which the shell is built stores various logs and metadata to recover this information. You don't need to be a programmer to find this data, you just need to know where to look.

In this article, we will discuss in detail all the available ways to determine the previous version of the software, from simple methods through the Mi Account to advanced ways to work with system logs through ADB. Accurate knowledge of the version of the previous build is critical to choosing the right file for manual restoration through Recovery.

Verification of history through Mi Account and cloud services

The easiest and most secure way to know which version of the software was installed earlier is through the Xiaomi Cloud ecosystem. If your device was activated with Mi Account and sync enabled, the company's servers could save device configuration information before the latest update. This does not guarantee 100% success, but is the first point to check.

This requires you to log in to the official Xiaomi cloud service website using your credentials. The device management section sometimes displays a connection history, where the system version may appear at the time of the last full synchronization, but it is worth considering that the data may not be updated instantly.

If you used Mi Cloud Backup to back up before upgrading, the backup often contains a configuration file inside the backup archive, and if you restore that file to another device or emulator (at last), you can see which version of the software the copy was created for, which is an indirect but reliable method.

Note that server statistics are not available in all regions, and if your account is registered in Europe or Russia, the details may be limited, so move on to the more technical methods described below, which give direct access to the system files.

Analysis of system logs and log files

The Android operating system maintains detailed logs of events known as logs, and even after updating some of these records can be stored in hidden memory areas or in the cache of applications, and you will need to turn on the developer mode and possibly use a computer to access them.

The first step is to activate USB debugging. Go to Settings → About Phone and tap 7 times on the build number to unlock the developer menu. Then, in the menu that appears, Additional → For developers, activate Debugging over USB. This will allow the system to transmit diagnostic data.

You can then try to find traces of the previous version in the update installer logs, and often the system stores a report of the last successful or unsuccessful update, and you can use special applications from the Google Play store, such as Logcat Reader, if you have root rights, or connect to your PC to view this data.

• 📱 Install a log reader app that requires minimum access rights.
• 🔍 Look for lines that contain "updater","previous_version" or "rollback".
• 💾 Save the found log to a text file for further analysis.

⚠️ Note: System logs can be overwritten with new events immediately after the reboot. If you have just updated and the phone has been running for several days, the chances of finding the old version in the logs are minimal.

Use of Mi Updater and Hidden Menu

The built-in update app, known as MIUI Updater, stores the cache of downloaded packets. Even if you have already installed a new version, residual files or links to a previous package can remain in the application’s memory.

To get into the extended menu, open the Update app and quickly click on the current version of MIUI (logo or version number) several times. This action activates hidden settings where additional menu items such as Select File or Update Settings may appear.

Some versions of the shell display a list of packages available for installation, including the version that was up to now if it is still considered relevant to your region, and a link to the full package (Full ROM) can be seen here, which often matches the previous stable version if you upgraded from it.

If the standard menu doesn’t show a story, try clearing the updater app data through the app settings, but do so carefully to avoid resetting the current update check status. Sometimes, after clearing the cache when you re-enter, the system can pull information about the previous packet from temporary storage.

Version definition via Mi Flash Tool and Fastboot

For advanced users who are not afraid to connect their smartphone to a computer, the most reliable technical way is to use the Mi Flash Tool in conjunction with the Fastboot mode. This method allows you to see detailed information about memory parts, including metadata about previous installations.

When you connect your phone in Fastboot mode (clamping the volume buttons when you turn on) and start the Mi Flash Tool, the program reads the device identifiers. Although it is primarily designed for firmware, sometimes the console logs or detailed info display a version of anti-rollback protection that is directly linked to the software version.

fastboot getvar all

By running this command in the command line (by pre-installing ADB and Fastboot drivers), you will get a complete list of device variables.Look for lines starting with version-base or similar that may indicate a basic version of Android or a modification specific to the previous firmware.

Search for information in forums and databases

If the software methods fail, it remains to look at the collective experience of the community: forums such as 4PDA, XDA Developers or official branches on the Mi Community, contain a detailed timeline for the release of updates for each model.

Knowing the approximate date you last updated your phone and the current version, you can calculate the previous one. Usually, between versions of MIUI, it takes 2-4 weeks, and between major Android updates - a few months. Find a topic dedicated to your model (for example, Xiaomi Redmi Note 10), and study the history of releases.

Users often post "About Phone" screenshots in the comments on news updates. By comparing release dates and versions, you can determine with high accuracy which build preceded your current one, and this is especially true for global firmware versions that come out later than Chinese ones.

• 🌐 Find the official branch of your model in the forum 4PDA or XDA.
• 📅 Sort messages by release date of updates.
• 🔎 Compare the current build number with the archive versions.

⚠️ Note: When searching for information on forums, pay attention to the firmware region (Global, EEA, Firmware from different regions may have different version numbers, and installing an inappropriate version may lead to errors.

Exclusion method and application installation date analysis

There is an indirect but sometimes useful method of analyzing the installation date of system applications. When a global firmware update (for example, from MIUI 12 to MIUI 13) many system applications are updated or reinstalled. However, some user data or settings may store time stamps indicating the period before the update.

Check the date of creation of files in /MIUI or /Android folder through the file manager with access to system folders. configuration files created immediately after the update will have a new date, but neighboring log files may date back to the period when the old firmware was running.

You can also analyze battery usage history in settings, and if the charge flow chart shows abrupt changes in consumption patterns immediately after a certain date, this may indicate when the system is updated, which will help narrow down the search for the version of the software that is currently in use.

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Before any major update, always take a screenshot of the About Phone screen and save it to the cloud. This is the only 100% way to guarantee you know the version of the previous firmware.

Frequently Asked Questions (FAQ)

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The only reliable way to find out the exact version of the previous firmware after the fact is to analyze the archives of forums by date or search for residual files in system logs, since the system itself hides this information.