Press the simultaneously and select Device Manager . Power off your mobile device completely.
Watch the list refresh. You should see a clean entry under labeled as RDA USB Serial Port (COMXX) or Coolsand/RDA COM Port without any yellow warning triangles. Troubleshooting Common Errors 1. Miracle Box "Waiting for USB Port" Error
Modern versions of Windows (Windows 10 and 11) block the installation of third-party drivers that lack a digital signature from Microsoft. Download File Miracle RDA Driver by -AH-Mobile....
Removing user locks, PINs, or FRP (Factory Reset Protection). Read/Write IMEI: Repairing connectivity issues. Why You Need This Driver (-AH-Mobile- Version)
The RDA chipset, produced by RDA Microelectronics, is commonly found in low-cost smartphones, feature phones, and wearable devices. The "RDA" in the driver's name refers to this specific chipset manufacturer. The "Miracle RDA Driver" is a USB driver that enables a Windows computer to properly recognize, communicate with, and manage any smartphone or tablet that is powered by an RDA (and often the related Coolsand) system-on-a-chip (SoC). Without this specific driver, the Miracle Box software (or other tools like Infinity-Box Chinese Miracle II) would be unable to detect and interact with RDA-based devices. Press the simultaneously and select Device Manager
The Miracle RDA Driver by AH-Mobile is a specialized tool for connecting feature phones featuring Coolsand/RDA chipsets to computers, facilitating firmware flashing, repairing IMEI, and unlocking devices. These drivers are essential for managing communication between mobile devices and servicing tools such as Miracle Box. For instructions and downloads, watch this YouTube tutorial from
Click and restart your computer to apply the changes. Method 2: Manual Installation via Device Manager You should see a clean entry under labeled
To ensure your computer correctly identifies your device, follow these typical installation steps: Infinity Chinese Miracle II SCR/SPD-RDA v1.05 - Facebook
Click on your computer name at the top of the list, then click > Add legacy hardware .
Before you begin the installation process, ensure your computer and environment meet the following criteria:
Works fine, but check your RDA version first