: Windows 10 or 11 is highly recommended.
: For a few agonizing seconds, the screen remained black. Then, a small green bar on his computer began to crawl. The PC’s Device Manager refreshed, and there it was—the SPD Diagnostic Port had appeared. enter diag mode spd
If the dialer codes do not work, or if you are a technician, use ADB commands. This requires to be enabled in Developer Options. : Windows 10 or 11 is highly recommended
| Command | Description | |---------|-------------| | show spd | Display current SPD data without diag mode | | reset spd defaults | Restore factory SPD settings | | exit diag mode | Leave diagnostic mode | The PC’s Device Manager refreshed, and there it
For other devices, you can try holding Volume Up + Volume Down simultaneously while plugging in the USB cable. If you find a specific combination that works, it can be a great free solution.