MTK device issue

AUTH info: MTK, version: 1
Firmware package: PD1934F_EX_A_1.70.7_vivo_mtk_alps-release-p0.mp3-pre16_mt6768
BROM version[1]: 7.2045.2.0
DA: MTK_AllInOne_DA.bin
hash: 7a3c72dad63c06bd1a67cce0354e7286cf26ab6a, size: 15.07 MiB
version: 3.3001.2020-11-02021/02/22 04:13:22, start addr: 0x40000800
Connecting to BootROM...
Power off the phone, disconnect and reconnect the battery(if possible) and connect USB cable...
Hold the VOL UP to force MediaTek BootROM.
Scanning BootROM or Preloader port... Done
Detected [BootROM] MediaTek USB Port_V1633 (COM16)
Connection status: EHCI:HUB:HUB[#3]:USB 1.10 High-Speed
USB Driver: [MediaTek Inc.] wdm_usb, version: 3.0.1504.0, date: 1-22-2015
Platform: 0x0707 [MT6768], hw sub code: 0x8A00, hw ver: 0xCA00, sw ver: 0x0000
security config: 0xE5
secure boot: yes
serial link authorization: no
download agent authorization: yes
Disabling watchdog timer... Done
Bypassing security config... error: custom loader not found.