Vivo 1820 doesn't boot

[ribbentrop]

Is it the famous August patch?
Some info from "About phone" menu:
Model number vivo 1820
Android version 8.1.0
Android security patch level 2021-10-01
Software version PD1818HF_EX_1.22.2
Compile time 2022-08-19

SEC_MT6765

Operation : Identify [ v2.32 ]

Mode : FLASH

1. Make sure device is powered off. Power off, if need. Wait 20 seconds after
2. Insert USB cable in phone
Waiting for device connection ...

PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM17)
MODE : PRELOADER PORT
PORT : 17
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
BROM : Init BROM
BROM init passed!
     CHIP : MT6765 , SBID : 0x8A00 , HWVR : 0xCA00 , SWVR : 0x0000
     CODE : Cervino
     TYPE : MODERN [RAPHAEL]
BROM : SecLevel : 0x00000005
BROM : SecMode  : SBC+SDA
BROM : BROM|BL  : 0xFF|0x03
BROM : PRELOADER PORT
AGENT : Vivo : SEC_MT6765 | Manual : Disabled
AGENT : Look for suitable BootChain in DA ... 
AGENT : MTK_AllInOne_DA.bin
AGENT : Found MT6765
AGENT : MTK_DOWNLOAD_AGENT
     BROM : Sending 1st DA ...
     BROM : Reset Interface!
PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM17)
MODE : PRELOADER PORT
PORT : 17
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
BROM : Init BROM
BROM init passed!
     CHIP : MT6765 , SBID : 0x8A00 , HWVR : 0xCA00 , SWVR : 0x0000
     CODE : Cervino
     TYPE : MODERN [RAPHAEL]
BROM : SecLevel : 0x00000005
BROM : SecMode  : SBC+SDA
BROM : BROM|BL  : 0xFF|0x03
BROM : PRELOADER PORT
AGENT : Vivo : SEC_MT6765 | Manual : Disabled
AGENT : Look for suitable BootChain in DA ... 
AGENT : MTK_AllInOne_DA.bin
AGENT : Found MT6765
AGENT : MTK_DOWNLOAD_AGENT
     BROM : Sending 1st DA ...

  BROM  : 0x00007024 : DA SEND ERROR!
  ERROR : SECURE BOOT : SELECTED DA NOT SUPPORTED IN CURRENT DEVICE STATE!
  INFO : PRELOADER Level : CORRECT DA required : PL/PL_CRYPTO/SWSEC

Error : Fail to init protocol!
>>> Remove battery, cable. Check cable/connection/driver! Check SW hint! Repeat operation!

Reconnect Power/Cable!

Y91C

Operation : Identify [ v2.32 ]

Mode : FLASH

1. Make sure device is powered off. Power off, if need. Wait 20 seconds after
2. Insert USB cable in phone
Waiting for device connection ...

PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM17)
MODE : PRELOADER PORT
PORT : 17
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
BROM : Init BROM
BROM init passed!
     CHIP : MT6765 , SBID : 0x8A00 , HWVR : 0xCA00 , SWVR : 0x0000
     CODE : Cervino
     TYPE : MODERN [RAPHAEL]
BROM : SecLevel : 0x00000005
BROM : SecMode  : SBC+SDA
BROM : BROM|BL  : 0xFF|0x03
BROM : PRELOADER PORT
AGENT : Vivo : Y91C | Manual : Disabled
AGENT : Look for suitable BootChain in DA ... 
AGENT : DA_PL_MT6762_0321.bin
AGENT : Found MT6765
AGENT : MTK_DOWNLOAD_AGENT
     BROM : Sending 1st DA ...
     BROM : Reset Interface!
PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM17)
MODE : PRELOADER PORT
PORT : 17
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
BROM : Init BROM
BROM init passed!
     CHIP : MT6765 , SBID : 0x8A00 , HWVR : 0xCA00 , SWVR : 0x0000
     CODE : Cervino
     TYPE : MODERN [RAPHAEL]
BROM : SecLevel : 0x00000005
BROM : SecMode  : SBC+SDA
BROM : BROM|BL  : 0xFF|0x03
BROM : PRELOADER PORT
AGENT : Vivo : Y91C | Manual : Disabled
AGENT : Look for suitable BootChain in DA ... 
AGENT : DA_PL_MT6762_0321.bin
AGENT : Found MT6765
AGENT : MTK_DOWNLOAD_AGENT
     BROM : Sending 1st DA ...

  BROM  : 0x00007024 : DA SEND ERROR!
  ERROR : SECURE BOOT : SELECTED DA NOT SUPPORTED IN CURRENT DEVICE STATE!
  INFO : PRELOADER Level : CORRECT DA required : PL/PL_CRYPTO/SWSEC

Error : Fail to init protocol!
>>> Remove battery, cable. Check cable/connection/driver! Check SW hint! Repeat operation!

Reconnect Power/Cable!

[YellowBoss]

I am not sure. It may be like that.
Probably you should try with latest beta CM2MT2 v2.36 but no guarantee https://infinity-box.com/?r=100202
Test-point may helps