Nokia HMD TA-1690 Test Point: EDL/Download Mode Pinout (Unisoc SC9832E)

If you are trying to unbrick your Nokia HMD Key (TA-1690) or remove an FRP lock but the device is not entering Download Mode, you will need to use the Nokia HMD Key Test Point. By shorting these hardware pins, you can force the device into Unisoc Mode USB Networking or COM port mode for flashing with professional tools.

⚠️ Disclaimer: Opening your device and shorting motherboard pins requires technical skill. This process will void your warranty. Proceed at your own risk. GSM Helpful is not responsible for any hardware damage.

Nokia HMD Key Test Point Details

Feature	Description
Device Name	Nokia HMD Key
Model Number	TA-1690
Chipset	Unisoc SC9832E
Purpose	Boot Repair, FRP Reset, Unbricking
Boot Mode	Unisoc SC9832E (Test Point)
Tools Required	SPD Upgrade Tool, UnlockTool, Pandora Box, CM2 (Infinity-Box)

Nokia HMD TA-1690 Motherboard Test Point Pinout for Unisoc SC9832E Flashing

Why do you need the Nokia HMD Key Test Point?

The hardware test point is essential in the following scenarios:

Dead Boot Repair: When the phone is not turning on and not showing anything on the screen.
FRP Bypass: Using professional tools like UnlockTool, Chimera, or Z3X.
Locked Bootloader: When software-based methods to enter Download mode fail.
Wrong Firmware Flash: To recover a device that was flashed with the incorrect binary.

How to Connect Nokia HMD Key in Test Point Mode

Carefully remove the back cover of your Nokia HMD Key.
Disconnect the Battery Connector (Safety first).
Locate the two small golden dots (Test Points) on the motherboard (refer to the image above).
Use a pair of metallic tweezers to short (connect) these two dots.
While holding the tweezers on the dots, connect the USB Cable to your PC.
Check your PC's Device Manager. You should see "Samsung Mobile USB Serial Port" or similar under Ports.

Required Drivers

To ensure your PC detects the device, install the official Samsung USB Drivers.

Nokia HMD Key (TA-1690)

Conclusion: Once the device is detected in the correct port, you can use your preferred service tool to flash the firmware or reset the device. If you have any questions regarding the pinout location, leave a comment below!