When you connect a MediaTek phone to a PC while it is switched off (or in BROM mode), the Preloader acts as a gateway. It allows the PC to send commands to the phone’s internal storage (NAND/eMMC).
Do not skip these steps. Most installation failures happen due to overlooked prerequisites. how to install mtk driver mediatek preloader usb vcom
Installing the is an essential gateway to advanced Android customization and repair. While Windows makes it intentionally difficult due to driver signing policies, the correct steps – disabling signature enforcement, using the all-in-one installer or manual Device Manager method – will get you there. When you connect a MediaTek phone to a
If the automatic installer fails or you see “driver not signed,” follow this. If the automatic installer fails or you see
This is the most important step. Windows blocks unofficial drivers (like MTK) by default.
| Symptom | Likely Cause | Solution | |---------|--------------|----------| | No new device appears | Wrong button combo, dead battery, charge-only cable | Try different button (Volume+ / Volume- / both). Use another USB cable. | | Device appears as “Unknown Device” permanently | Driver not assigned | Re-attempt manual installation from Method 2. | | Device appears but with code 10 (cannot start) | Driver conflict or USB 3.0 | Switch to USB 2.0 port. Uninstall other COM port drivers. | | Port appears but SP Flash Tool gives S_BROM_CMD_STARTCMD_FAIL | Incompatible driver version | Reinstall using the All-in-One driver v1.0.7 or newer. |