Please refer to the website below to see how to disassemble the miner .
Please refer to the website below to upgrade the firmware to the related version.
1.A 90-day warranty is provided from shipping out date. To avail this warranty,a Repair ticket must be generated by the customer on Bitmain's website
2. All sales are final. No refunds will be given. Defective machines can be repaired for free under the Bitmain warranty policy. After the warranty period, machines can be repaired for the cost of parts and labor.