The above video for your reference

Tutorial Video Link: https://youtu.be/6_4oxhVT6hg

Notes:

1. T9+ control board is backward-compatible with the S9 and T9. However, the control board of S9 and T9 is not compatible with T9+.

2. The MicroSD card recommended capacity 4GB or 8GB. Larger capacity MicroSD cards are not recommended as they are very susceptible to errors.

3. Computer running Windows XP or later with card reader.

4. Download Link : https://service.bitmain.com/support/download

  On the left sidebar click "Flashing SD Card With Image>>Tools and Instructions to Image SD Card. Scroll up the page and find t9+-SD Tools.zip. Load t9+-SD Tools.zip to your computer in a convenient file location. 

Flashing Instructions :

1. Remove control board from miner assembly.

2. Shift the JP4 jumper to the right as shown below.

3. Insert MicroSD card into computer and format to FAT32.

4. Unzip the downloaded t9+-SD Tools.zip and copy the contents to the MicroSD card.

5. Insert the MicroSD card into the card slot on the control board

6. Power on the control board. Allow at least 90 seconds for the files to load automatically. When loaded, the red and green indicator lights on the control board will blink.

7. Power off the control board and shift the JP4 jumper back to the original position.

8. Power on the control board and access the miner interface. Go to the Upgrade page and Uncheck “Keep Settings”. Flash the firmware and run the miner for 20 minutes. 

This method applies to the following situations:

• The miner is power-off in the upgrading process.
• The miner cannot start (cannot find IP).
• The miner can only use the default factory workers.

Prepare before you go:

1. Computer with Windows 7 system or above
2. Card reader
3. SD card with capacity lower than 32G storage with FAT32 format
4. V9/Z9 Miner machine

Control board recovery step：

1. Go to https://service.bitmain.com/support/download
2. Download the v9-SD Tools.zip by go to the left sidebar, found and click "Flashing SD card with image" >> "Tools and Instructions to Image SD card" -> "v9-SD Tools.zip" Note that Z9 mini uses the V9 recovery file. 
3. Extract the "v9-SD Tools.zip" files. And copy the extracted files as below to FAT32 SD Card
4. Remove the SD card from computer.
5. Power off miner (unplug the power core).
6. Insert the SD card properly to the miner.
7. Power on miner. Wait until the signal light besides the internet port stop blinking if the program is copied well to the control board. Wait for 1 minute after light stop blinking before you power off the miner.
8. Power off miner (unplug the power core). Then remove the SD card.
9. Power on miner. Now, miner have been restored to the factory setting.

Load the firmware. Go to https://service.bitmain.com/support/download for the latest version firmware.

Please uncheck “keep setting” and reload the firmware. Load either the V9 or the Z9 mini firmware according to the type of miner you have. Please refer to the website below for the video about how to upgrade the firmware https://youtu.be/iFQ_0P3USBs

Case 1: the miner cannot get IP

There are two cases,

1. The new miner cannot get the IP address

   First confirm the DHCP mode of network has been opened, and routers, network cable are normal, and then use the method in the following link to restore factory settings.

   If it is still not working, you need to ship the control board back for repair.

2. After changing the network, the miner cannot get the IP address

   If the mine is set up with a static IP, modifying the IP or restoring factory settings can help to get the new IP, and if not, please refer to 1.

Case 2: the miner power off during the upgrading process

Repower the miner and if it is not working, please refer to the above method.

Case 3: the hash board cannot be detected

If miner can only detect two or three hashboards, replace the miner's control board with good known control board from other miner, and if it still has the same issue, it means hashboard(s) is/are damaged, please ship the item back to us for repair.

Case 4: the miner cannot detect the fan

If the miner can only detect one fan, or no fan can be detected, replace good fans and if it is still not working, replace the miner's control board with the other miner to see if the fan port on the control board is damage, if it has the same issues, please ship the control board back for repair.

Case 5: the miner crashed during the upgrading process

If the miner is stuck in the upgrading page, this may be caused by the browser, and it is recommended to use Firefox or Google Chrome.