Previous articleFile type is not supported or corrupted on Xiaomi – how to fix the error once and for all

The message “file type is not supported or corrupted” on Xiaomi, Redmi or smartphones POCO It can appear at the most unexpected moment: when you try to open a photo from the gallery, launch a downloaded video, install it. APK-A mistake doesn't always mean that the file is actually corrupted, most often it's a system setting, a lack of codecs, or a conflict of applications, and 80 percent of the time it can be fixed without resetting the phone to factory settings.

In this article, we will analyze all possible causes of error - from the banal lack of a program to open a file to serious failures in the file system. MIUI. You will learn how to diagnose a problem, what tools to use to recover data, and why some files (e.g., the data,.HEIC or.MKV) And you have exclusive life hacks for Xiaomi owners that you won't find in standard instructions.

We will immediately warn you: if the file was downloaded from an unverified source (especially this applies to the file). APK-The error may be due to a virus or a fake, in which case it is better to delete the file and check the phone with an antivirus, for example, built-in Mi Security or third-party Malwarebytes.

So let's start with the simplest, and then we get to the advanced methods.

1. Check the file extension - it may have been changed

Most often, the error "File type is not supported" occurs due to an incorrect extension, such as a file with a video format.mp4 may be renamed into.mp4.txt, And the system just doesn't know which program to open it, or vice versa: a downloaded.pdf document is displayed as.pdf.exe, which is a warning sign (a virus is possible).

How to check and fix the extension:

1. Open any file manager (such as embedded Files or Solid Explorer).
2. Find the problem file and click on the three dots next to it. → Properties (or Information).
3. Look at the file type or extension field, and if it doesn't match the content (e.g., a photo has a.zip extension), you need to change it.

To show file extensions in MIUI:

1. Open the files. → three lines up → Settings.
2. Activate the option to Show file extensions.
3. You can now manually rename the file by fixing the extension (e.g., with a file file file). video.mp4.txt on video.mp4).

It's important! Not all extensions can be easily changed. For example, if a.apk file is actually an archive (like.zip), renaming won't help, you have to unpack it first.

2. Install the desired application to open the file

System system MIUI I can't open all the formats out of the box:

• 📷 Photo format HEIC/HEIF (Used in iPhones, they won’t open in the standard gallery.
• 🎬 Video MKV or FLV You may not play in the Mi Video Player.
• 📄 Documents DJVU or EPUB Not supported by the built-in File Viewer.

The solution is simple: install a dedicated app from Google Play. Here are the proven options:

After installing the application, try opening the file through it. If that doesn't work, try resetting the application's default settings:

1. Go to Settings → Applications → Application Management.
2. Click on the three dots at the top → Reset application settings.
3. Confirm the action and restart the phone.

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If a file doesn't open even in a specialized application, try uploading it to your computer and checking it out there. It might be corrupted.

3. Codec Problems: Why Videos Are Not Playable

The error “file type is not supported” when trying to open a video is often associated with the lack of codecs – special libraries that decode audio and video, especially for formats.mkv,.flv or files with rare codecs (for example, for example, for files with rare codecs, H.265/HEVC).

How to fix it:

• 🎥 Install. MX Player and at the first start, allow it to download additional codecs (he will offer to do this automatically).
• 🔧 In the settings MX Player go to Decoder and select Software Decoder (if the hardware is not working).
• 📥 If the video is downloaded from the Internet, try transcoding it into.mp4 Using HandBrake (on PC) or Video Converter (on phone).

Critical information: on some Xiaomi models (for example, Redmi Note 10 Pro or other models). POCO X3 Pro) built-in Mi Video player does not support video with resolution above 4K or bitrates over 50 Mbit / s. In this case, only a third-party player will help.

If you play a video, but you don't sound, there's a problem with the audio codec.

1. Open file in VLC (It supports almost all codecs).
2. Remove the audio track with Audio Extractor and save it in the.mp3.

4. Damaged files: how to recover data

If the file is really corrupted (for example, due to incorrect download, interrupted transmission over Bluetooth or a failure in the memory of the phone), you can try to restore it.

For photo and video:

• 📸 Use Photo Recovery or DiskDigger to restore images.
• 🎞️ Video Repair is suitable for video (works with the video.mp4,.mov,.mkv).
• 💾 If the file was stored on SD-map, connect it to your PC and check for errors using chkdsk (in the Windows command line, type chkdsk E: /f, where E: is the letter of your disk).

For documents and APK:

• 📄 You can try to open a damaged.pdf or.docx in Google Docs (upload the file to the cloud and open it through the browser).
• 📦 If.apk is not installed, check its integrity through APK Analyzer or re-upload the file.

If the file was downloaded from the Internet and corrupted during download:

1. Remove it and download it again (preferably via a stable Wi-Fi connection).
2. Use a download manager (such as Advanced Download Manager) that supports restarting downloads.

5. File system and phone memory errors

Sometimes the problem is not the file itself, but the damaged file system of the phone or the file system. SD-This can happen after the map:

• ⚡ Abrupt power outage during file recording.
• 🔄 Wrong extraction SD-map.
• 🛠️ Failed update MIUI.

How to check and correct:

1. For internal memory: Go to Settings → Memory. → Clean up and press Check. If the system finds errors, follow the instructions on the screen.
2. For SD-Maps: Connect the card to the PC and format it in FAT32 Or exFAT (pre-copy important data!) Use the utility. SD Card Formatter from SD Association for Deep Cleaning.

⚠️ Note: If the phone says "damaged" SD-The card" with each connection, it can mean physical wear and tear on the drive, in which case it is better to replace the card - data recovery will cost more than a new microSD.

If the error only appears in the files on SD-try the map:

1. Remove the card and paste it back (sometimes a banal reboot helps).
2. Format the card not through the phone, but through the computer (in Xiaomi sometimes the formatting settings are confused).
3. Check the card on another device (such as an old phone or camera).

Conflicts with MIUI safety restrictions

System system MIUI She's known for her aggressive approach to security, which sometimes interferes with file management:

Locking the installation APK source

If you are trying to install.apk and see the error "File type is not supported", most likely, the settings have disabled the installation from third-party sources.

1. Go to Settings. → Annexes → Application management → Settings (cogs at the top) → Installation of unknown applications.
2. Select the browser or file manager you are downloading the APK through and allow installation.

Limitations MIUI file-work

In the latest versions MIUI 14/15 There are additional file integrity checks that sometimes mistakenly block normal data:

• 🔓 Turn off the defenses. MIUI In Settings → PapaSSWORD & SECURITY → Privacy → Special permits → Protection MIUI.
• 📂 Try moving the file to another folder (e.g., from Download to Documents).
• 🔄 Reboot your phone – sometimes it resets time limits.

3.Conflict with Google Play Protect

Google Play Protect can block files from opening or starting if it thinks they are suspicious.

1. Open Google Play → profile icon → Play Protect → Settings (cogs).
2. Turn off the option to scan the device for threats (temporarily!).
3. Try opening the file again. If you can, the problem is that the security malfunctions.

⚠️ Warning: Disabling Play Protect reduces device security. After checking the file, it is better to turn on the protection again!

7.Extreme measures: resetting and flashing

If neither of these methods worked, the problem could be deeper in the system itself, leaving two options:

1. Reset to factory settings

This will delete all the data from the phone, but it often helps with system failures.

1. Backup important files (via Settings) → The phone. → Backup or manually).
2. Go to Settings → About Phone → Resetting → Delete all data.
3. After reset, check if the file is opened.

2. Flashing through Fastboot

If the reset didn't work, it might be the firmware itself that's damaged. MIUI via Fastboot:

• 🔧 Download the official firmware for your model from the Xiaomi website.
• 🖥️ Install the Mi Flash Tool on your PC and connect your phone in Fastboot mode (clip Volume Down). + Power with the phone turned off).
• 📥 Follow the instructions for the firmware (detailed guide is available on the 4PDA).

⚠️ Warning: Fastboot Flash Flashing deletes all data and can result in your phone being locked if the wrong version is selected. MIUI. Do this only if you are confident in your actions!

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Before resetting or firmware, make sure to check if the error is related to a particular file. If other files open normally, the problem is not with the system, but with the corrupted file itself.

FAQ: Frequent Error Questions: File Type Is Not Supported»