A: Try these: Use a different USB cable (data cable), install MTK USB driver manually via “Have Disk”, or short the phone’s test points (find CLK and CMD points on the motherboard).
mt6761-flash --port COM5 --image-dir ./stock-rom/ --resume --failover
Output:
[INFO] Connected to MT6761 (BROM mode)
[INFO] Battery: 87% – OK
[INFO] Partition table loaded (34 partitions)
[INFO] Checksum match: preloader (skip)
[INFO] lk differs – backing up lk to ./backup/lk_20260124.bin ... Done
[INFO] Flashing lk ... Done
[INFO] boot differs – flashing boot ...
[ERROR] USB reset during boot write
[RECOVERY] Restoring lk from backup ... Done
[RECOVERY] Switching to recovery-boot only mode
[SUCCESS] Device is bootable into recovery. System partition requires reflash.
Unlike Qualcomm’s EDL mode, MediaTek chips use a Preloader and Download Agent (DA). When you connect a powered-off MT6761 device to a PC, the Preloader code runs for a few seconds. The Flash Tool sends a handshake signal; if successful, the device loads the DA into RAM, allowing read/write access to the flash memory (eMMC/UFS). Mt6761 Flash Tool
Before flashing an MT6761 device:
| Error Code | Meaning | Solution |
| --- | --- | --- |
| S_BROM_CMD_SEND_DA_FAIL (0xC0060003) | Preloader handshake timeout | Install correct drivers; use USB 2.0 port; short test points. |
| STATUS_SEC_AUTH_FILE_NEEDED (0xC0050009) | Security auth required | Load auth_sv5.auth (provided with firmware) in SP Flash Tool → Options → Authentication. |
| S_DL_GET_DRAM_SETTING_FAIL (0xC0070004) | DRAM initialization fail | Use a different SPFT version; try MTK Bypass Utility. |
| S_FTHND_FILE_IS_NOT_LOADED | Missing Download Agent | Download MTK_AllInOne_DA.bin and assign in Options → Download Agent. | A: Try these: Use a different USB cable