Xiaomi smartphone owners often face a situation where after checking the updates, the system reports the presence of a new version, but the memory space ends critically. Users wonder where exactly the device saves the installation package and whether it can be removed after a successful installation. Understanding the structure of the MIUI and HyperOS file system is necessary not only to free gigabytes, but also for manual system recovery in case of failures.
By default, the Android operating system on Xiaomi devices hides the system folders from normal viewing through a standard Explorer. This is done to protect critical data from accidental deletion by the user. OTA-Updates that take up a significant amount of internal storage.
In this article, we will take a closer look at the logical structure of directories where installation files accumulate and how to manage them safely, and learn how to distinguish temporary caches from the system components you need. The topic of manual updating through the computer will also be touched upon, since the paths to files in this case differ from the standard ones. OTA-loading.
Standard loading paths OTA-update
When you receive a notification about the availability of a new version MIUI Or HyperOS, and you agree to download, the system places the packet in a hidden system directory. The standard path where Xiaomi downloads the firmware when it automatically updates is as follows: /data/MIUI/downloaded_rom/. Inside this folder is usually an archive with the.zip extension, whose name often contains the build version number.
The problem is that /data/ is not available to view without root permissions. The average user, when they open the file manager, won't see the directory. The system specifically restricts access to prevent the bootloader from being damaged or critical update files from being deleted that haven't been installed yet, which is why many people get confused when they try to find the file through standard means.
⚠️ Note: Direct deletion of files from system folders without root rights is not possible by standard methods. Attempts to access through third-party file managers with superuser rights can lead to system disruption if you do not know the exact purpose of the deleted files.
There is an alternative way that the system sometimes uses to temporarily store data before installation, especially in older versions of the shell. This is the directory /data/com.android.providers.downloads/cache/. Temporary download files may lie here, but they often have obscure names and do not always explicitly indicate firmware. For the average user, the easiest way to clean this space is by using the built-in Cleanup tool.
Access to files via Recovery Mode
If you don't have root rights, but you need to check for a firmware file or manually install it, you can use Restore Mode, which is a special diagnostic interface that has access to all partitions of memory. To get there, you need to turn off the smartphone and pinch the key combination Volume up + Power (on some models with connected power) USB-cable).
In the Recovery menu (usually OrangeFox, TWRP or stock MIUI Recovery), you can go to the File Manager section, which opens full access to the file system, including the root directory, and navigation is done with volume buttons, and the choice is with a power button or touchscreen, and this is where you can see the MIUI folder at the root of the internal storage or in the Data section.
☑️ Check before manual update
It’s worth noting that in stock Recovery, file system access can be limited to just browsing or basic operations. If you plan to work with firmware often, it’s wise to unlock the bootloader and install custom recoveries, which will give you full control over where Xiaomi downloads the firmware and how it is installed.
Manual installation: where to copy the firmware file
The situation changes dramatically if you download the firmware yourself through a browser on a computer or other device, in which case you choose where to place the file for subsequent installation through the update menu. For manual updates (“Select file”), the archive must be placed in the root of the internal storage or in a specific folder.
The official path for manual installation, which is recognized by the shell automatically, looks like this: the root of the internal storage. /storage/emulated/0/. The file should be at the root, not in the Downloads or Downloads folder» → «Version. MIUI» → three-point» → «Select a file, the system will find the archive.
If the automatic search doesn't work, you can use the built-in Explorer to select the file, in which case the file can be in any folder, for example, in the file. /Download/. However, experienced users recommend keeping the clean root of the storage. The table below shows the differences in paths for different methods:
| Method of updating | Location of the file | Required rights | File extension |
|---|---|---|---|
| OTA (automatic) | /data/MIUI/downloaded_rom/ | Root | .zip |
| Manual (via menu) | Root of memory (/) | No. | .zip |
| Fastboot (via PC) | ADB folder on PC | Unlocking BL | .tgz / .zip |
| EDL (MiFlash) | PC driver folder | Authorized account | .tgz |
It is important to understand that after successful firmware installation, the installation file often remains in memory. OTA-Update can remain in a hidden folder. /data/, When you manually update the file, it stays where you put it, and it needs to be manually deleted.
Cleaning the place after system update
After a successful system upgrade, users often find that space has not increased as expected, because old backups and installation packages can be saved, so you don't have to go into the system files to make room safely.
Use the built-in Security → Cleanup app. The system will analyze the storage itself and suggest removing Installation Packages or Residual Files. This is the most secure method that is guaranteed to not remove excess. Xiaomi's algorithm marks update files as safe to delete only after confirming the successful installation of the new version.
If you've been updating manually, just find the firmware file (usually weighing between 3 and 5GB) in the download folder or in the root of the memory and delete it. Make sure the phone is stable before you delete the file, even though once installed, the system no longer needs it.
⚠️ Note: Do not delete files with names like updater_log file-file /MIUI/debug_log/, If you don't diagnose a problem, they take up little space, but they can be critical for engineers to analyze failures.
Using Fastboot and MiFlash for firmware
For deeper work with the device, for example, when switching from Global to China version or when restoring the “brick”, the Fastboot mode is used. In this case, the question “where does Xiaomi download the firmware” applies to your computer. Firmware files are downloaded to the PC and unpacked to the root of the disk, for example, in a folder. C:\xiaomi_rom\.
The MiFlash Tool is used to install it, and it doesn't look for files on the phone, it reads them from the computer and sends them over to the computer. USB-It is important that the path to the firmware folder does not contain Cyrillic symbols and spaces, otherwise the process may end in error.
The process is as follows:
1. Download the firmware archive (extension.tgz).
2. Unpack the archive in a folder with a short path, for example. C:\rom\.
3. Launch MiFlash, choose a path and connect the phone in Fastboot mode (clamping Volume Down + Power).
What to do if MiFlash makes a mistake?
This method completely ignores the phone’s internal memory before recording begins, and overwrites all partitions, so all data on the device will be destroyed unless you select Save Data mode (which is not available for all types of firmware).
Hidden partitions and system cache
Beyond the obvious places, firmware can leave traces in the Cache partition, which is a temporary storage that is cleared when you reboot in Recovery or when you first start after an update, and sometimes large amounts of data get stuck there if the update is interrupted.
To clean this partition, you don't have to delete files manually, just reset the cache (Wipe Cache) through Recovery, it won't affect your personal photos and contacts, but it will delete temporary system files, including the remnants of old updates, which is a useful procedure if the phone is unstable after the upgrade.
Also worth mentioning is the /persist/ section. There, Xiaomi records calibration data (sensors, IMEI, WiFi) Never attempt to format or write firmware files manually there. This is a reserved area, damage to which will cause communication loss or sensors to fail.
💡
Before any firmware update, make a full backup through Mi Cloud or locally on your PC. Even a regular update can be error-prone, and data recovery without a backup will be impossible.
Frequently Asked Questions (FAQ)
Can I transfer the folder with the firmware to SD-map?
Why did 6GB of memory disappear after the update?
Where to find the update error log?
Do I need to delete the firmware file after installation?
What to do if your phone is stuck on the logo after an update?
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Knowing the exact paths to firmware files allows not only freeing up space, but also diagnosing installation errors, but interfering with system partitions without root rights and understanding the consequences is dangerous for the stability of the device.