Help Xiaomi Flashing service unavailable ?!

[iDevGsm]

Firmware package: davinci_global_images_V10.3.9.0.PFJMIXM_20190712.0000.00_9.0_global
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM80)
Connection status: XHCI:HUB3:HUB3:HUB3:USB 2.10 High-Speed
USB Driver: [Qualcomm Incorporated] qcusbser, version: 5.1.1.2, date: 1-10-2020
Initializing...
MSM Serial number: 0xb8caff93
MSM HW ID: 0x000e60e1
OEM Public Key Hash: 0x1bebe3863a6781db4b01086063007334de9e5ca14971c7c4f4358ec9d79cda46
SBL SW version: 1
Firehose: prog_ufs_firehose_sdm855_ddr.elf
hash: 8a008f1a69f6e6019a10b944d01286a6c6bab8f7, size: 656.50 KiB
QC_IMAGE_VERSION: BOOT.XF.3.1-00202-SM6150LZB-1
IMAGE_VARIANT: SDM7150LA
OEM_IMAGE_VERSION: c4-miui-ota-bd41.bj
Sending firehose loader... Done
Handshaking...
Sending ping... Done
INFO: Binary build date: Jul 7 2019 22:47:20
INFO: Chip serial num: 3100311443 (0xb8caff93)
Sending configurations...
ERROR: Only nop and sig tag can be recevied before authentication.
[SERVER] Service unavailable, server query response failed !

Iam trying to flash Mi9T and every time get this error !
waiting for UFI Team response

Thanks in Advanced