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: Repair
Selected model: SM-J260F
Software version: 38.10
Waiting ADB device... OK
Reading phone info...
Model: SM-J260F
Android version: 8.1.0
PDA version: J260FPUS4ASI2
CSC version: J260FSER4ASI1
Phone version: J260FXXS4ASI2
Product code: SM-J260FZKRSER
CSC country code: Russia
CSC sales code: SER
Phone SN: RZ8M81W1YZA
IMEI: 357951104322154
HW version: MP 0.500
RF cal date: 20190813
Chip name: EXYNOS7570
Modem board: SHANNON305
Security patch: 2019-09-01
Boot Warranty bit: 1
SIM State: READY,READY
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
Try downgrade modem if possible.
Done with Samsung Tool PRO v.38.10