RDA/Coolsand devices only stay in "Boot Mode" for a few seconds. If the software flash tool doesn't catch the port immediately, the phone switches to charging mode.
Last tested: Windows 11 22H2 64-bit – Working
If you have tried installing older, corrupted, or conflicting RDA drivers in the past, completely uninstall them via Windows Programs and Features or the Device Manager before proceeding. Step-by-Step Installation Guide (64-bit)
A physical USB 2.0 port is highly recommended. Modern USB 3.0/3.1 ports can occasionally cause communication timeouts with older RDA chipsets.
For a successful installation on modern Windows versions, follow these steps:
If you need help with a specific part of the installation, let me know: Your exact (e.g., Windows 10, Windows 11) The error message you see in Device Manager The flashing tool you plan to use with the driver
to ensure your flash goes through without errors.
Use a high-quality USB data cable. Some bundled cables only support charging, not data transfer.
: Download the driver package from a reputable repository like DriverMax or DriverIdentifier .