Before operation turn phone to TestPoint mode:
Turn off phone, then short TestPoint on phone pcb
and plug USB cable
Wait for device "HUAWEI USB COM 1.0" in Ports


Repair
New IMEI 1 : 353*********050
New IMEI 2 : 353**********159
New SIM_LOCK status : UNLOCKED
Unlock downgrade/customization limitations
Reboot after repair
Selected Cpu/Bootloader - Kirin659_Hi6250_T0_A8.0_V1
2022-06-22 14:20:12.412 Connecting to server...
2022-06-22 14:20:12.673 Connected!
2022-06-22 14:20:13.650 Find device COM153, handle 12196
BOOTLOADER selected to update:Kirin659_Hi6250_T0_A8.0_V1
2022-06-22 14:20:14.043 Downloading bootloader...
FILE TO download: Kirin659_Hi6250_T0_A8.0_V1_3.dtwork
downloading file Kirin659_Hi6250_T0_A8.0_V1_3.dtwork...
2022-06-22 14:20:15.552 Success
FILE TO download: Kirin659_Hi6250_T0_A8.0_V1_4.dtwork
downloading file Kirin659_Hi6250_T0_A8.0_V1_4.dtwork...
2022-06-22 14:21:11.894 Success
2022-06-22 14:21:11.902 Bootloader write success!
2022-06-22 14:21:11.916 Waiting for device REMOVAL/INSERTION...
2022-06-22 14:21:16.328 Device ready!
2022-06-22 14:21:16.334 Connecting to server...
2022-06-22 14:21:16.609 Connected!
2022-06-22 14:21:17.661 Reading info...
2022-06-22 14:21:21.372 IMEI certifiacate backup success!
2022-06-22 14:21:22.084 Done!

Fastboot provided info:
CPU: hi6250
Model: ANE-LX1
Firmware: ANE-LX1 9.1.0.401(C432E13R1P7)
Vendor: hw
Country: eu
MEID:  00000000000000
SN: 9WV4C19131008306
PCB SN: 4C4VYH18B9042859
WIFI MAC: 342912D832CF
BT MAC: 342912D83C94
Theme color: black
Device color: black
FBLOCK: 1
Bootloader FB lock: unlocked
Bootloader User lock: locked

Found signed IMEI:
Key: 0x8F04
IMEI1: 864*********382
IMEI2: 864***********396
SIM NW_LOCK status: UNLOCKED
SIM NS_LOCK status: UNLOCKED
SIM SP_LOCK status: UNLOCKED

Found NV data:
Modems: 2
IMEI1: 864********382
IMEI2: 864**********396
PESN: 00000000
MEID: 00000000000000

Found OEM data:
IMEI:864*********382
IMEI1:864*********396
MEID:00000000000000
Model: ANE-L21
Firmware: ANE-LX1 9.1.0.132(C432E5R1P7)
Rescue: rescue:Chipset-dallas 8.0.0.001(03CY)
Vendor: hw
Country: eu
Version limitation: ON
SIMCARDMODE: double
Bootloader User lock: locked
Phone ID: E4A3BAD6B2F6853
2022-06-22 14:21:25.890 Repairing...
2022-06-22 14:21:30.606 Update PIFile.bin success!
2022-06-22 14:21:30.911 Write partition modemnvm_factory...
2022-06-22 14:21:31.070 Write partition modemnvm_factory success!
2022-06-22 14:21:31.085 Write partition modemnvm_img...
2022-06-22 14:21:31.361 Write partition modemnvm_img success!
2022-06-22 14:21:31.375 Write partition modemnvm_system...
2022-06-22 14:21:31.540 Write partition modemnvm_system success!
2022-06-22 14:21:31.554 Write partition modem_secure...
2022-06-22 14:21:32.020 Write partition modem_secure success!
2022-06-22 14:21:32.033 Write partition oeminfo...
2022-06-22 14:21:34.083 Write partition oeminfo success!
2022-06-22 14:21:34.105 Unlocking restrictions...
2022-06-22 14:21:34.143 Unlock restrictions success!
2022-06-22 14:21:34.151 Rebooting...
2022-06-22 14:21:34.186 Reboot  success!
2022-06-22 14:21:34.197 Done!