Many newer MT6768 devices (especially Xiaomi and Realme) have SLA/DAA protection. To bypass:
The MediaTek MT6768 (Helio P65) uses a specific memory layout, partition table, and boot sequence. While the SP Flash Tool works across many MediaTek chips, each SoC requires: sp flash tool mt6768
Using an MT6768 firmware with a different chipset (e.g., MT6765 or MT6771) will result in hard bricks. Therefore, always source the exact firmware for your device model and the MT6768 processor. Many newer MT6768 devices (especially Xiaomi and Realme)
Many flashing failures are caused by faulty cables. Use the original cable that came with your phone. Using an MT6768 firmware with a different chipset (e