: Click "Start" or "Download" in the tool. The process should begin once the device is detected in the correct boot mode.
: Many technicians prefer using the tool integrated within the InfinityBox CM2 software suite for more stable performance. How to Use the Flash Tool coolsand rda flash tool link
: For most Coolsand devices, you must hold the "0" (zero) key or another designated boot key while connecting the USB cable to the PC. : Click "Start" or "Download" in the tool
: Download and install the Coolsand/RDA USB Drivers for your specific version of Windows (7, 8, 10, or 11). coolsand rda flash tool link
: Restore or repair IMEI numbers on supported RDA devices.