Low-level Development

📄️ Entering EDL Mode

Qualcomm Download Mode (EDL) is an emergency download mode for Qualcomm processor devices, primarily used for emergency repairs, firmware flashing, or device unlocking.

📄️ Burn SPI boot firmware

The Dragon Q6A comes with SPI boot firmware pre-installed. Under normal circumstances, there is no need to re-flash the boot firmware. However, if the system fails to boot properly, you can try re-flashing the SPI boot firmware.

📄️ Compile the kernel and system image

Environment preparation