You opened Settings โ About the phone to activate the developer mode, but instead of the usual item โBuild Numberโ or Android commands, you see an empty field or the words โUnavailableโ? This problem occurs on Xiaomi smartphones (including Redmi, POCO, Black Shark) after MIUI updates, resets or incorrect manipulation of system files. In 80% of cases, it can be solved without flashing โ just know the algorithm of actions.
In this article, we will look at all possible causes of the Android teamโs disappearance, from MIUI bugs to manufacturer lockdowns, and provide step-by-step instructions with illustrations for each recovery method, focus on methods that work on MIUI 14/15 (including global and Chinese versions), and warn against common bugs that can turn a time glitch into a brick.
Why the Android team on Xiaomi went missing: 5 main reasons
Before we begin to rebuild, it is important to understand what caused the item to disappear.
- ๐ Update MIUI โ After installing a new firmware version (especially beta versions or transitions between regional builds), the system can reset hidden settings.
- ๐งน Factory reset โ an incomplete reset or interrupted process often results in file corruption /data/property/persist.sys.miui.debuggable.
- ๐ ๏ธ Manual editing of system files โ using Root Explorer, ADB or setprop commands without knowing the consequences.
- ๐ Manufacturerโs lock on some models (e.g. Xiaomi) 13T Pro for the Chinese market: access to developer mode is limited by security policy.
- ๐ฆ Virus software or application conflict โ programs like Clean Master or โoptimizersโ can delete critical configuration files.
Critical detail: If the Android command disappeared after updating through MIUI Updater with the error โCan not check the packageโ, the problem lies in the corrupted /cache/recovery files โ they need to be cleaned manually.
Method 1: Reboot and reset cache (works in 60% of cases)
Start with the simplest, software reboot, and this method helps if the loss of a command is due to a temporary MIUI failure:
- Press the power button and select Reboot (donโt turn off the phone!).
- After turning on, check for the presence of the Assembly Number in Settings โ About phone.
- If the command does not appear, go to Settings โ Applications โ Application Management.
- Find the settings (cog icon), click Warehouse โ Clear the cache.
For models with MIUI 14+, add one more step:
Settings โ Memory โ Cleanup โ Deep Cleanup (select System Data)๐ก
If after the reboot, the Android command appeared, but disappears again - the problem is in the background process of com.miui.securitycenter. Turn off autorun for this application in the battery settings.
Method 2: Activate through the Engineering Menu (for advanced users)
If standard methods donโt work, try enabling developer mode through the engineering menu, which is suitable for Qualcomm Snapdragon-based devices (e.g. Redmi Note 12 Pro+, POCO F5):
- Open the phone app and enter the code: ##4636##
- In the menu that opens, select Phone Information.
- Scroll down and find the USB Debugging line โ if itโs inactive, tap it 7 times.
- Go back to Settings โ About the phone and check if you are a developer!
โ ๏ธ Note: On devices with MediaTek processor (e.g. Redmi) 10C) This code may not work. Try it instead:
##36446337##What to do if the engineering menu is not opened?
Method 3: Recovery through ADB (Universal Method)
If previous methods didnโt work, connect your phone to your PC and use Android Debug Bridge (ADB), which works even on locked devices, but requires pre-configuration:
- Download Platform Tools from the official Android website.
- Enable USB Debugging (if it has been activated before) or use the Fastboot workaround.
- Connect your phone to your PC and execute the command: adb shell settings put global development_settings_enabled 1
- Restart the device and check for the availability of the Developer Item in the main settings.
If Adb devices canโt see your device:
- ๐ Install Xiaomi drivers USB Drivers (you can download it on the official website).
- ๐ Switch the connection mode from Charging to File Transfer.
- ๐ก๏ธ Disable the antivirus (it can block adb.exe).
Install Platform Tools| Download Xiaomi USB Drivers| Enable debugging on USB| Allow debugging on your phone (pop-up) | Disable antivirus on PC-->
Method 4: Manual editing of build.prop file
For users with unlocked bootloader and root rights (or through TWRP), a method of editing the system file build.prop is available.
- Download any file manager with root support (such as Solid Explorer or FX File Explorer).
- Go to /system/build.prop and open the file in the text editor.
- Add or change the line: ro.miui.ui.version.code=10 (where 10 is the version of MIUI that is relevant to your device).
- Save the file, set the rights to 644, and restart the phone.
โ ๏ธ Attention: MIUI 15 and later, this method can only work if the dm-verity is disabled. If the phone does not boot after editing, run the original build.prop through Fastboot:
fastboot flash system system.imgMethod 5: Fastboot Flashing (extreme case)
If none of these methods work, you can still completely reflash through Fastboot mode, which erases all data but is guaranteed to restore access to the Android command.
- Download Fastboot-ROM for your model (for example, tissot_global_images_V14.0.2.0.TCMMIXM_20230310.0000.00_12.0_global For the Redmi Note 7).
- Unpack the archive in a folder with platform-tools.
- Transfer the phone to Fastboot mode (clip Power + Volume down).
- Run the command: fastboot flash all (or fastboot flash all -w for a full reset).
Compatibility table for firmware and models:
| Model | Code name | Appropriate firmware | Notes |
|---|---|---|---|
| Redmi Note 11 Pro+ 5G | veux | MIUI 14 Stable | Requires unlocking the loader |
| POCO X5 Pro | redwood | MIUI 15 Beta | Supports the A/B section |
| Xiaomi 12T | plato | Global Stable | Not compatible with EEA-firmware |
๐ก
Fastboot flashing is the only way to get your Android command back if the problem is caused by a partition /system corruption or incompatible version of MIUI.
Method 6: Contact Xiaomi Service Center
If you are unsure of your skills or phone warranty, the best option is to contact an authorized service center. Xiaomi restores access to the developer mode for free if the problem is caused by:
- ๐ฆ Firmware defect "out of the boxยป.
- ๐ง Update error through OTA.
- ๐ Hardware locking (on some models for the Chinese market).
Before the visit:
- Back up your data via Mi Cloud or Google Account.
- Find out the phone's IMEI (type *#06#).
- Prepare a check or confirmation of purchase (for warranty repairs).
โ ๏ธ Note: If you have previously unlocked the bootloader or installed custom firmware, the warranty is canceled, in which case the service center may refuse free repairs.