Choose the file that matches your hash rate. If your miner is 14TH and shipped after October 1, 2016 choose the last file in the table.
Run the miner for 20 minutes after loading the firmware.
If the firmware upgrade is not successful or you still get the "Socket Connection Failed" error please upload the Package to Fix Upgrade Failure: https://shop.bitmain.com/support.htm?pid=007201611260753443104jm60Q6L0639
Then re-load the firmware.
If the error still appears:
1. In the Miner configuration screen check the pool URL very carefully. Any error, including spaces, can cause this error.
2. Confirm that your internet connection is stable. Network configurations or security settings in the router can cause this error.
3. If the network is good then please disconnect all the hash boards from both the power supply unit and the controller. Reboot the miner with only the controller connected. If the error still appears then we need to replace the controller.
4. If the error message does not appear with only the controller connected then please run the miner with one hash board at a time. If one of the hash boards is defective please create a repair ticket and return the whole miner to us for repair: https://shop-repair.bitmain.com/user/workOrderGuide
Please let us know if the problem is still not resolved or you have further questions.
Best regards,
Jocelyn
Bitmain
So, i upgrade the firmware,but instead of socket connection failed i got any message just a miner without firmware, i left the miner for 30min and the miner didn't start, after that i upload the package to fix upgrade and during the downloading i got an error i couldn't upload the file,
I reupgrade the firmware and i wait for 30 min and the problem was solved. was i weird solution