FLASH INSTRUCTIONS:
1. Choose correct flash file(s).
2. If you have PIT file chosen, then you must check 'Repartition' option.
3. Check flashing options if needed (Repartition, EFS clear, Boot update).
4. Power on the phone in download mode (turn off phone, press vol.down + home + power).
5. Connect the phone to PC with USB cable, install drivers if needed.
6. Press 'Flash' button.
Operation: Flash
Selected model: SM-A505W
Software version: 39.3
File analysis... OK
Total file size: 0x95FF7CB4 (2399 Mb)
Searching USB Flash interface... COM10 detected
Setup connection... OK
Set PIT file... OK
Reading PIT from phone... OK
Sending sboot.bin... OK
Sending param.bin... OK
Sending up_param.bin... OK
Sending cm.bin... OK
Sending keystorage.bin... OK
Sending uh.bin... OK
Sending vbmeta.img... OK
Sending boot.img... error
Done with Samsung Tool PRO v.39.3
on phone screen
please get the approval to use factory binaries (bootloder)