Lenovo a7020a48 frp lock error

hi infinity team .i reset lenovo a7020a48 frp in new exe ver 1.57. software done frp ,but set goes in to error tool dl image fail. set was working ok in frp status. here is the info. dl fix mode also not working at last.

Card found : S/N : 8F8C34EB , v0134
Chinese Miracle II [MTK module] v 1.57

Operation : Check / Read Info [ v1.57 ]

1. Power Off Phone , Remove battery , Insert back
2. Insert USB cable. In some cases require hold BootKey

Wait for phone…
Phone found! [ 4 ]
Sync…
Inital Boot Ok!
BB_CPU_PID : 6755
BB_CPU_NME : [MediaTek] Helio[P10]|MT6755_S00
BB_CPU_EXT : 0xCB00 , 0x8A00 , 0x0000
Processing BROM stage
Settings for BROM configured!
SecCfgVal : 0x01000000
BromVer : 0x00FF
BLVersion : 0x0001
PreLoader : Active [ Boot with PL ]
BootLdrSS : SIGNED with SPRELOADER
Processing DA stage
DA Select done, will use MTK_AllInOne_DA_v5.1624.16.07
Sending and initialize DA …
DAgent configured successfully
Connection agent : PRELOADER
DRAM already initialized by Preloader
Link with DAgent established
eMMC FlashIC initialized
[eMMC] : FLASH_VEN : 0x15 , OEM : 0100
[eMMC] : FLASH_INF : [SAMSUNG] , BM41X
[eMMC] : FLASH_CID : 150100525831344D4207D62BCA1253AD
[eMMC] : FLASH_BRT : 0x00400000 , 0x00400000 , 0x00400000
[eMMC] : FLASH_LEN : 0x0000000747C00000
[eMMC] : FLASH_UCP : 29820 MiB [eMMC 32 GiB]
DEV RID : 0xF7DA00F94D5491E9117680934F5B3C30
INT RAM : 0x00000000
EXT RAM : 0x80000000 [2 GiB]
[NAND] : FLASH : NOT INSTALLED
[UFSM] : FLASH : NOT INSTALLED
[HSUSB] : MODE : HIGH-SPEED
Boot Ok!

[AP] : Initial info read Ok!

Brand : Lenovo
ProdName : k52_a48
ProdModel : Lenovo A7020a48
Device : A7020a48
AndroidVer: 6.0
MTKxCPU : MT6755
MTKxPRJ : A7020a48_USR_S259_1607211026_mp7-V2.3_lenovo6755.66c.m_P67_ROW

EXTRA :
LCD : Not info available 🙁
LCD Res : 1920×1080
TOUCH [0] : GT1XX
CAM [0] : s5k3m2_mipi_raw
CAM [1] : ov8865_mipi_raw
CAM [2] : s5k3m2_sunny_mipi_raw
CAM [3] : ov8865_sunny_mipi_raw
MODEM : STOM_MODEM=koleos2_row_lwctg_md1
LOCALE : en_US zh_CN zh_TW es_ES pt_BR ru_RU fr_FR de_DE tr_TR vi_VN ms_MY in_ID th_TH it_IT ar_EG hi_IN bn_IN ur_PK fa_IR pt_PT nl_NL el_GR hu_HU tl_PH ro_RO cs_CZ ko_KR km_KH iw_IL my_MM pl_PL es_US bg_BG hr_HR lv_LV lt_LT sk_SK uk_UA de_AT da_DK fi_FI nb_NO sv_SE en_GB hy_AM zh_HK et_EE ja_JP kk_KZ sr_RS sl_SI ca_ES

Done!
Elapsed: 00:00:23
Reconnect Power/Cable!

Card found : S/N : 8F8C34EB , v0134
Chinese Miracle II [MTK module] v 1.57

Operation : Fix DL Errors [ v1.57 ]

1. Power Off Phone , Remove battery , Insert back
2. Insert USB cable. In some cases require hold BootKey

Wait for phone…
Phone found! [ 4 ]
Sync…
Inital Boot Ok!
BB_CPU_PID : 6755
BB_CPU_NME : [MediaTek] Helio[P10]|MT6755_S00
BB_CPU_EXT : 0xCB00 , 0x8A00 , 0x0000
Processing BROM stage
Settings for BROM configured!
SecCfgVal : 0x01000000
BromVer : 0x00FF
BLVersion : 0x0001
PreLoader : Active [ Boot with PL ]
BootLdrSS : SIGNED with SPRELOADER
Processing DA stage
DA Select done, will use MTK_AllInOne_DA_v5.1624.16.07
Sending and initialize DA …
DAgent configured successfully
Connection agent : PRELOADER
DRAM already initialized by Preloader
Link with DAgent established
eMMC FlashIC initialized
[eMMC] : FLASH_VEN : 0x15 , OEM : 0100
[eMMC] : FLASH_INF : [SAMSUNG] , BM41X
[eMMC] : FLASH_CID : 150100525831344D4207D62BCA1253AD
[eMMC] : FLASH_BRT : 0x00400000 , 0x00400000 , 0x00400000
[eMMC] : FLASH_LEN : 0x0000000747C00000
[eMMC] : FLASH_UCP : 29820 MiB [eMMC 32 GiB]
DEV RID : 0xF7DA00F94D5491E9117680934F5B3C30
INT RAM : 0x00000000
EXT RAM : 0x80000000 [2 GiB]
[NAND] : FLASH : NOT INSTALLED
[UFSM] : FLASH : NOT INSTALLED
[HSUSB] : MODE : HIGH-SPEED
Boot Ok!

DA DLFix Passed!

Done!

software hangs here

Elapsed: 00:00:46
Reconnect Power/Cable!