Enter Diag Mode Spd 'link' Online

Always use an identical revision. Writing a mismatched SPD will permanently damage the memory controller.

If the device is on and has USB Debugging enabled, you can sometimes trigger it via a command prompt: Ensure ADB Drivers are installed. Connect the phone and run: adb shell . enter diag mode spd

WP pin is still HIGH. Solution: Physically ground the WP pin. On a loose DIMM, use a jumper between WP and VSS (ground) pin. Always use an identical revision

Below is a comprehensive guide on how to enter Diag Mode on SPD devices using various methods. Why Enter SPD Diag Mode? enter diag mode spd