i have problem with 2 oppo a71 (2018),identify or try flash phone always error
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM20)
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.0.5, date: 1-4-2013
Initializing...
MSM Serial number: 0x5bd6ca3f
MSM HW ID: 0x0009a0e1
OEM Public Key Hash: 0x05f06ba44eeb2abdf14bb644aabc2e693ddf7b8711cc7cf07d4cd0eb2e1a8728
SBL SW version: 0
Sending prog_emmc_firehose_8953_ddr.mbn, size: 357.34 KiB... Done.
Attempting to run firehose... Done.
Sending ping... ERROR: Failed to authenticate Digital Signature
Resetting validation state
ERROR: Failed to authenticate Digital Signature
Resetting validation state
failed
Model: Oppo A71 2018
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM14)
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.0, date: 7-8-2015
Initializing...
MSM Serial number: 0xf30d3630
MSM HW ID: 0x0009a0e1
OEM Public Key Hash: 0x05f06ba44eeb2abdf14bb644aabc2e693ddf7b8711cc7cf07d4cd0eb2e1a8728
SBL SW version: 0
Sending prog_emmc_firehose_8953_ddr.mbn, size: 357.34 KiB... Done.
Attempting to run firehose... Done.
Sending ping... ERROR: Failed to authenticate Digital Signature
Resetting validation state
ERROR: Failed to authenticate Digital Signature
Resetting validation state
failed