SM-A520F Android version: 8.0.0 modem not supported

REPAIR INSTRUCTIONS:
1. Power on the phone.
2. Enable 'USB debugging' in 'Settings'-'Developer options',
tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Reboot to...' button and select mode to reboot (download or recovery).

Operation: Patch Certificate
Selected model: SM-A520F
Software version: 37.0

Waiting ADB device... OK
Reading phone info...
Model: SM-A520F
Android version: 8.0.0
PDA version: A520FXXSBCSF8
CSC version: A520FUUBBCSF4
Phone version: A520FXXSBCSF8
Product code: SM-A520FZKATTT
CSC country code: TRINIDAD AND TOBAGO
CSC sales code: TTT
Phone SN: R28J511MN2V
IMEI: 35X
HW version: MP 0.400
RF cal date: 20170510
Chip name: EXYNOS7880
Modem board: SHANNON325
Security patch: 2019-06-01
Boot Warranty bit: 1
SIM State: READY
Checking Super user right... true
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem not supported
Searching server... OK
Checking available files... not found compatible file
KNOX WARRANTY VOID is 0x1. Phone is not supported

Done with Samsung Tool PRO v.37.0