click identify devices and got error like this:

Firmware package: PD1818EF_EX_A_1.10.12_vivo_qcom_LA.UM.6.6.2.r1-04200-89xx.0_sdm439_split
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM4)
Connection status: EHCI:HUB[#6]:USB 2.00 High-Speed
USB Device: [Qualcomm CDMA Technologies MSM] QHSUSB__BULK
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.7, date: 8-2-2017
Initializing...
MSM Serial number: 0x4274fc91
MSM HW ID: 0x000bf0e1 (SDM439), OEM ID: 0x0000 (Qualcomm), MODEL ID: 0x0000
OEM Public Key Hash: 60ba997fef6da9f05885fa11f1dd6d2a90d052a257a09c2075d7246cc73c0d43
SBL SW version: 0
Firehose: prog_emmc_firehose_8937_ddr.mbn
hash: 529bb68157dbe44079e6092f80e94b6828fac84e, size: 381.46 KiB
oem version: compiler0176
qc version: BOOT.BF.3.3.2-00063
variant: FAADANAZA
Loading firehose... Done
Handshaking...
Sending ping... Done
Sending configurations...
TargetName: 8937
MemoryName: eMMC
Version: 1
Firehose configured.
Failed

platform: msm8937, cpu abi: arm64-v8a
manufacturer: vivo
board: QC_Reference_Phone, name: msm8937_64
brand: vivo, model: vivo 1817
build id: OPM1.171019.026, version: 8.1.0 [Oreo] (OPM1.171019.026 release-keys)
build date: Fri May 7 11:47:04 CST 2021, security patch: 2021-05-01
build description: msm8937_64-user 8.1.0 OPM1.171019.026 eng.compil.20210507.114704 release-keys

crypto state: encrypted

When i wan to flash got error again like this
Firmware package: PD1818EF_EX_A_1.10.12_vivo_qcom_LA.UM.6.6.2.r1-04200-89xx.0_sdm439_split
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM4)
Connection status: EHCI:HUB[#6]:USB 2.00 High-Speed
USB Device: [Qualcomm CDMA Technologies MSM] QHSUSB__BULK
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.7, date: 8-2-2017
Initializing...

Processing rawprogram_unsparse_no_qcn.xml
Writing PrimaryGPT at 0x00000000 (34 sectors)... WARNING Unauthorized tag ''
Failed at addr 0x00000400

what should i do?

    AmarCell WARNING Unauthorized tag

    Hello,
    Latest Vivo Qualcomm devices use Firehose with Custom Auth.
    Thats mean, we can make identify, read partitions, but firehose will not allow to do write procedure without permissions to Vivo Server.

    You can bypass this secure protocol via ISP methode, or via chip off methode using UFI eMMC ToolBox if possible.

    B.R

      10 months later

      Then how to flash Vivo Y91 1818, without extra hardwares..

      Write a Reply...