SM-A310f big problem

After a make reset pattern lock the phone restart, but now show :An error has occured while updating the device software. Use the Emergency recovery function in the Smart Switch PC software."
How to revive my phone?

1. Power on the phone.
2. Connect the phone to PC with USB cable.
3. Check Samsung modem in device manager, install drivers if needed.
4. Press ‘Unlock’ button for direct unlock or ‘Read codes’ to read security codes.

To reset Pattern lock:
1. Power on phone in download mode (turn off phone, press vol.down + home + power).
2. Connect phone to PC with USB cable, install drivers if needed.
3. Press ‘Reset Pattern Lock’ button.

Operation: Reset Pattern Lock
Selected model: SM-A310F
Software version: 26.4

Checking local file… OK
Searching server… OK
Compare local and server file… OK (up to date)
Searching USB Flash Interface… detected COM18
Setup connection… OK
Reading data from phone… OK
Sending data to phone… error timeout

It looks like you have a unsucessful operation, try this link for solution – inurl:f453 site: "Selected model: SM-A310F" "Sending data to phone… error timeout" – Ïîøóê Google
Done with Samsung Tool PRO v.26.4