Mtk-allinone-da-v3.3001
...the mtk-allinone-da-v3.3001 remains a gold standard. It is often the only DA that works when a phone is stuck in "BROM 0x8" error without requiring a hardware test point.
If you get STATUS_SEC_AUTH_FILE_NEEDED , use the DA in BROM Mode by shorting the CLK pin on the eMMC to ground while booting. mtk-allinone-da-v3.3001
: Select the corresponding scatter text file for your specific device model. mtk-allinone-da-v3.3001