Developer mode on Xiaomi smartphones is a powerful tool that allows you to access hidden system settings, debugging applications and fine optimization of the device. On the Mi 8 model (codename dipper), this mode is especially useful for experienced users who want to unlock the bootloader, flash custom software or adjust performance to their tasks. However, not everyone knows that activating this mode requires several hidden steps, which we will discuss in this article.
Unlike newer Xiaomi models, where the path to developer mode may differ due to shell updates. MIUI, On the Mi 8, the algorithm remains stable regardless of the firmware version (from the MIUI 10. MIUI The key is not to miss key points, such as the number of clicks on the build number or the unblock confirmation. OEM. If you have never worked with an engineering menu before, don’t worry: our guide is designed for users of any level.
Warning for beginners: some of the developer mode settings can cause the phone to run unstable if changed without understanding the consequences. For example, disabling MIUI Optimization speeds up animations but breaks navigation gestures. We will mark all the dangerous points so you can avoid typical errors.
What is a developer mode and why you need it on Xiaomi Mi 8
Developer Mode is a special menu in Android that is hidden by default from ordinary users, and it contains more than 50 additional options that allow you to:
- 🔧 Unlock the bootloader for installing custom firmware (LineageOS, Pixel Experience).
- 🐞 Enable debugging on USB (USB Debugging for working with ADB and Fastboot.
- ⚡ Customize performance: limit background processes, speed up animation, or force use GPU-rendering.
- 📡 Change the network settings, for example, enable 4G+ or disable the automatic operator selection.
On Xiaomi Mi 8, this mode is especially in demand due to Xiaomi’s closed policy towards the bootloader. Without activation of OEM unlocking (OEM Unlocking), you will not be able to flash alternative software, even if the phone is officially unlocked through the Mi Unlock Tool. Also, the developer mode allows you to bypass some of the limitations of MIUI, for example, disable Forced encryption, which speeds up the device’s work on custom firmware.
Not all features are equally useful, however, such as changing Minimum width can break some applications, and activating Force RTL layout will flip the interface from right to left, a common mistake for beginners.
Phone Preparation: Checking the MIUI Version and Unlocking the OEM
Before activating the developer mode, you need to follow two mandatory steps: check the version of MIUI and unlock the OEM settings.
First, open Settings → About phone and find the MIUI version bar. On Mi 8, it can be, for example, MIUI 12.5.4 Stable or MIUI 14.0.3 Beta. If the version is older than MIUI 10, the developer mode activation algorithm remains the same, but new versions may require additional password/pattern lock confirmation.
Check the OEM Unblocking Status:
Important! On some Xiaomi firmware, the OEM Unlock only appears after you have attached your Mi Account and enabled the developer mode, and if you don't see this option, don't worry, it will be available later.
What to do if OEM Unlock is inactive?
Step-by-step: how to turn on the developer mode on Xiaomi Mi 8
Now, the key thing is to activate the hidden menu, and it takes no more than 2 minutes to do this.
- Open your phone settings and go to the About Phone section.
- Find the line "Version" MIUI» And you tap it 7 times in a row, and after 3-4 taps, you'll get a pop-up notification saying, You're almost there!.
- Keep pressing until you see the message: You became a developer!
- Go back to the main settings menu, and now a new section will appear» → «For developers (or just developers, depending on the version) MIUI).
If nothing happens after 7 clicks:
- 🔄 Make sure you are using the version. MIUI, Not the phone model or Android version.
- 🔐 Check if the antivirus is blocking or MIUI Optimization Access to Hidden Settings (Stop It Temporarily).
- 📱 Restart your phone and try again.
☑️ Check before activating the developer mode
Attention! Some Xiaomi Mi 8 firmware (especially Chinese) requires you to enter your Mi Account password after activating the developer mode. If you forget it, restore access in advance through account.xiaomi.com.
Set up key parameters: what can and can not be touched
Once you activate the developer mode, you will have access to dozens of options, and we will break down the most useful and dangerous ones so that you can optimize the Mi 8 without the risk of bricking the device.
Safe settings (can be changed):
| Parameter | What's he doing? | Recommended value |
|---|---|---|
| USB debugging | Allows you to connect to your PC via ADB | Included (if ADB is needed) |
| Do not turn off the screen during charging | Useful for testing or firmware | Included (optional) |
| Show the pressing | Displays points when touching the screen (for screencasts) | Included (if necessary) |
| Animation scale (0.5x) | Accelerates transitions between windows | 0.5x or off. |
Dangerous settings (change at your own risk!):
- ⚠️ Turn off the absolute volume level – can break the sound in Bluetooth devices.
- ⚠️ Do not save actions - disables the transaction log, which prevents debugging.
- ⚠️ Forced rendering GPU — speeds up graphics, but drains the battery and heats the processor.
💡
If you accidentally changed a dangerous setting and the phone started to glittle, reset the developer mode settings: go to Settings → Applications → Application Management → Three dots (menu) → Reset settings and select Reset for developers.
Unlocking the bootloader through the developer mode: pitfalls
One of the main reasons for the Xiaomi Mi 8’s developer mode to be enabled is to prepare for unlocking the bootloader, but there are a few nuances that many people forget:
1. Mi Account Link. Without a Xiaomi account, you won't be able to unlock the bootloader even through the Mi Unlock Tool.
- Account confirmed by email/phone.
- The phone is synchronized with Mi Cloud.
The device is linked to the account in the Settings → Xiaomi account.
2. Wait 72-168 hours. Once the account is tied, Xiaomi blocks the unlock for 3-7 days (depending on company policy).
3. Mi Unlock Tool version. Use only the latest version of the utility from the official website en.miui.com/unlock. Older versions may not recognize the Mi 8 or give an error Couldn't unlock.
⚠️ Attention! If you have already unlocked the bootloader before, but then updated the firmware through MIUI OTA, The bootloader can automatically lock again. Check its status with the command: fastboot oem device-info If the answer Device unlocked: false, you have to repeat the unlock procedure.
Frequent mistakes and their solutions
Even experienced users sometimes face problems when working with the developer mode on Xiaomi Mi 8. We have collected the most common errors and ways to fix them:
1. no Developer Menu appears after 7 taps
- 🔹 Make sure you are clicking on the Version. MIUI, Not the Android version.
- 🔹 Restart your phone and try again.
- 🔹 Check if the developer mode is disabled in the settings (sometimes it is hidden after updates).
2. the option "Debugging by USB" is inactive
- 🔹 Connect your phone to the PC by USB and select the File Transfer Mode (MTP).
- 🔹 Install the drivers. ADB Download from Google or via Mi PC Suite).
- 🔹 Reboot both devices.
3. USB Debugging Not Authorized Error When Connecting to ADB
- 🔹 The phone will be asked for debugging permission - confirm it.
- 🔹 If the request does not appear, turn off and turn on Debugging again. USB.
- 🔹 Remove old authorization keys on the PC command: adb kill-server & & adb start-server
💡
If after activation of the developer mode the phone began to brake, check whether the option is not turned on Do not save actions or Forced GPU-These settings put a lot of strain on the Snapdragon 845 processor in the Mi 8.