The DA_SWSEC.bin file is a key tool for several advanced procedures:

Double-check that your da-swsec.bin configuration matches your chipset variant. Error: "DA_HASH_MISMATCH" or "Status SEC_AUTH_FILE_NEEDED"

Navigate to the root directory where your flashing software is installed on your PC.

| Error Message / Symptom | Possible Cause | Solution | | :--- | :--- | :--- | | | The tool is not properly initializing the Download Agent. | Double-check that you have selected DA_SWSEC.bin as the Download Agent. Try a different version of SP Flash Tool. | | ERROR: SECURE BOOT: MISMATCH BOOT SIGNATURE! | The selected DA file is incompatible with the device's secure boot key. | You need a different or device-specific Secure Boot DA file. Try a collection of DA files for your chipset (e.g., MT6735, MT8163). | | ERROR: S_AUTH_HANDLE_IS_NOT_READY (5004) | The device uses an additional "Auth" file (authentication file) alongside the DA. | You need to load an Authentication File (e.g., auth_sv5.auth ) in the tool's "Auth File" tab/option. This is common on newer devices. | | ERROR: S_SECURITY_SECRO_HASH_INCORRECT (6126) | The DA file and the scatter file or preloader are mismatched. | Try a different DA file. Some devices may require DA_SWSEC_CRYPTO20.bin instead of the standard one. | | Phone just turns on (charges) when connected. | The default DA is being used, and it cannot handle the secure boot process. | Manually reload DA_SWSEC.bin in the flash tool. Ensure the tool is truly using this file and not the internal default. |