Owners of Xiaomi, Redmi and Poco smartphones often face a lack of free space in internal memory. One of the reasons for overflowing storage can be old or downloaded update files of the operating system. MIUI and its modern counterpart HyperOS have a specific directory structure where installation packages are stored. Understanding where the firmware files are stored is necessary to properly maintain the device and free up disk space without risking damage to system components.
In this article, we will discuss in detail the logical structure of the Android file system used by the Chinese manufacturer. OTA-Updates and full versions ROM. We will also discuss the topic of security: which files can be deleted and which ones are strictly forbidden to touch, this knowledge will help you avoid mistakes when manually cleaning your smartphone.
It's worth noting that access to some system folders can be restricted to access rights. In standard operating mode, the user sees only part of the structure. However, to perform deep cleaning or transfer firmware for installation through Recovery, it often requires the use of an integrated administrator-enabled conductor or a connection to a PC. Let's look at the main storage locations.
Internal memory structure and system partitions
The Android file system that Xiaomi smartphones run on is built on a hierarchical basis. The root directory denoted by the symbol / contains all the data necessary for the OS to work. User files, including downloads, are usually located in the section /sdcard/ or /storage/emulated/0/. This is where the main folders are available for viewing without root rights.
System firmware files that are downloaded automatically or manually are most often hidden in secure directories. A standard file manager may not display their contents without enabling the "Show Hidden Files" mode. It is important to distinguish between the System partitions where the operating system itself resides, and the Data partition where user data and update cache are stored.
⚠️ Note: Never delete files from system partitions unless you are sure of the 100% They're in the designation. /system/ or /vendor/ Without a backup can turn a smartphone into a brick".
It's convenient to use the built-in Explorer app or third-party solutions like MI File Manager to navigate through files. When you go to the root of internal memory, you'll see a lot of folders with lower-case names, and that's where the technical directories that are responsible for updating the software are hidden. Understanding this structure is the first step to effectively managing the device's memory.
The way OTA-updates: folder downloaded_rom
The most common place where Xiaomi firmware files are stored for automatic updates is the hidden directory. downloaded_rom. When you receive a notification of a new version MIUI or HyperOS and agree to download, the system stores the full service pack right here. Once installed successfully, this file often stays in place, taking up the entire service pack. 2 before 5 GB of disk space.
To find this folder, you need to open the root directory of internal memory. In the conductor settings, you need to activate the display of hidden files: /storage/emulated/0/downloaded_rom/. Inside, you'll find an archive with the.zip extension, whose name usually contains the firmware version number. If the update is already installed, this file can be safely deleted.
Having this file allows you to install updates without re-downloading over the Internet, which saves traffic. However, unless you plan to roll back on the previous version or reinstall the system, storing this archive does not make sense. Freeing up a few gigabytes can significantly speed up the smartphone, especially if the memory is almost full.
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Before deleting the file from the folder downloaded_rom Make sure your phone is stable after the last update.If you plan to flash it in the future, it's best to keep the archive on your computer.
User downloads and manual installation of ROM
This is a very different situation if you're used to manually updating your smartphone by downloading firmware from official sources or forums, and in this case, the Xiaomi firmware files end up in the standard browser or file manager download folder. /MIUI/ or /Download/ root-storage.
When using the standard MIUI bootloader or browsers like Chrome and Mi Browser, files are saved along the path /storage/emulated/0/Download/. If you download the firmware through the Updater application in file selection mode, the system can move it to a special /MIUI/ folder, which is created automatically when the relevant services are first started.
- 📂 Download folder: Here are files downloaded through a browser or messengers. Look for archives with names like this. miui_XIAOMIGlobal_....
- 📂 folder MIUI: A specific directory for files related to the Xiaomi ecosystem, often containing logs, backups and downloads. ROM.
- 📂 Bluetooth folder: If you were transferring firmware from another device over Bluetooth, the file may be here.
Manual installation requires care. The file must be intact. Once you have completed the installation through the Select File menu in the update menu, the original archive often remains in the download folder. It can also be deleted to make room. downloaded_rom, There may be other important documents, so only delete files with the.zip extension related to the firmware.
☑️ Pre-deletion check ROM
Hidden system directories and update cache
Beyond the obvious places, the Android operating system uses hidden directories to temporarily store data.In Xiaomi smartphones, it can be a folder.android_secure Or the Google Play Services cache, where snippets of updates sometimes settle, and accessing them requires you to turn on the display of hidden files, since their names begin with a point of view.
Special attention should be paid to the folder /Android/data/. It stores application data, including update services, and may contain temporary files that the system does not automatically delete, but cleaning this partition requires extreme care. Deleting the wrong files can lead to resetting of application settings or errors in the operation of system services.
Another important aspect is the Recovery cache: When the phone goes into recovery mode to install the update, it can use a temporary partition that is not visible to the user in normal mode. This data is usually cleared automatically after the restart. If the process is interrupted, garbage files that take up space but do not carry a payload can remain in the system.
⚠️ Attention: Cleaning the folder /Android/data/ manually can lead to loss of progress in games or application settings. Use this feature only if you understand what a particular subfolder is responsible for.
To analyze the space occupied by hidden files, it is better to use the built-in cleaning tools in the Security application. They are able to correctly identify a secure cache and suggest its removal. Manual intervention in hidden system directories is justified only if there are specific problems or deep diagnostics.
Table of location of firmware files
For ease of perception, we organize data about the paths to files. The table below shows the main locations where ROM installation packages and OTA updates can be located. This will help you quickly navigate the file structure of your Redmi or Poco device.
| File type | The way to the directory | Access. | Can I remove it? |
|---|---|---|---|
| Automatic OTA | /storage/emulated/0/downloaded_rom/ | Hidden (needs guide) | Yes, after installation. |
| Manual boot (browser) | /storage/emulated/0/Download/ | Open-ended | Yeah, if you don't. |
| MIUI system folder | /storage/emulated/0/MIUI/ | Open-ended | Files only. Zip. |
| Temporary cache | /storage/emulated/0/Android/data/ | Limited. | Carefully. |
Using this table will allow you to quickly identify the space you occupy. Pay attention to the Access column: to work with hidden folders, be sure to turn on the appropriate option in the Explorer settings. This is the key point to access the folder. downloaded_rom.
Why the folder downloaded_rom hidden?
Cleaning up memory and removing old versions
The process of cleaning out old firmware files is simple enough if you know where to look. The first step is always to analyze the space occupied. Go to Settings → Memory and see what exactly is consuming resources. If you see large files in the category "Other" or "System files", chances are that these are the remnants of updates.
To delete, go to Explorer, turn on the display of hidden files and find the folder downloaded_rom. Select the firmware archive and press "Delete." The system will request confirmation, because the file is in a secure zone. After deletion, it is advisable to reboot the device so that the system indexes are updated and the space vacant is displayed correctly.
If you're using a manual installation, check the Download folder. Sort files by size -- firmware archives usually weigh more than 2GB. Deleting these heavyweights will instantly free up a significant amount of memory. This is especially true for 64GB models, where every gigabyte counts.
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Regularly checking the folder downloaded_rom After a successful upgrade, it allows you to keep your internal memory clean and prevents false messages about space shortages.