For the Redmi Note 9 (merlin), which uses the MediaTek Helio G85 (MT6768/MT6853) chipset, you can perform a Mi Account and FRP unlock using free tools like SP Flash Tool combined with an MTK Auth Bypass Tool.
Below are the details and free file links to help you get the job done.
🛠️ Required Files & Tools (Free)
MTK Auth Bypass Tool: To disable the SLA/DAE protection (e.g., MTK Meta Utility or MTK Bypass Rev4).
SP Flash Tool: Use a modified version that supports bypassing authentication.
Scatter & Unlock Files: Specifically for the merlin model.
📥 Download Links
Unlock & Scatter File: Download via Google Drive (Source: CellCare)
Alternative Tool (All-in-One): MTK Meta Utility (Often has one-click buttons for Mi Account/FRP reset).
📝 Step-by-Step Guide (SP Flash Tool Method)
1. Disable Auth Protection
Open the MTK Auth Bypass Tool.
Click on Disable Auth.
Power off your Redmi Note 9.
Hold Volume Up + Volume Down and connect the USB cable.
The tool should show “Success” or “MTK Auth Bypassed.”
2. Configure SP Flash Tool
Open SP Flash Tool.
In the Download-Agent tab, select MTK_AllInOne_DA.bin.
In Scatter-loading file, select the MT6768_Android_scatter.txt file you downloaded.
Go to the Format tab and select Manual Format Flash.
3. Enter Unlock Addresses
Enter the following hex addresses based on what you need to remove:
Note: Always verify these addresses in your specific scatter file using Notepad++ (search for the “frp” or “config” partition).
4. Execute
Click Start in SP Flash Tool.
Keep the device connected (with Auth already bypassed).
A green checkmark will appear once the process is finished.
⚠️ Important Notes
Relock Issue: If you unlock the Mi Account but connect to the internet, it may “Relock.” To prevent this, you should disable the “Find Device” apk or use a “Mi Account Anti-Relock” file after flashing.
Drivers: Ensure you have the LibUSB and MTK USB VCOM drivers installed, or the tool won’t recognize the device in BROM mode.
