Antminer K7 control board SD card flashing tutorial

1. Prepare tools

Hardware: computer, TF card reader, TF card.

Software: decompression tool (WINRAR recommended), K7 card firmware flash.

Firmware download link: 

https://www.zeusbtc.com/firmware-download/details/4822-antminer-ckb-miner-firmware-download

2. Make TF card

(1) Unzip the downloaded firmware (click on the firmware and select the unzip file).

(2) After selecting the unzip file, a new dialog box will pop up, just click Confirm.

(3) After unzipping, a folder with the same name as the zip package will appear. At this point the unzipped folder is ready to be used.

(4) Insert the memory card into the card reader and plug the card reader into the USB port of the computer.

(5) After the card reader is inserted into the USB port of the computer, the computer will prompt for a new device and display the disk letter corresponding to this TF card.

(6) Format the inserted memory card to FAT32 format, find the corresponding disk of the TF card, click Format.

(7) After you click Formatting, a new dialog box will pop up (as shown below). In the new dialog box, click the drop-down menu behind the file system and select FAT32 (the default is FAT32). Once you have selected it, click Start and it is ready to be formatted.

(8) Before the formatting starts, a dialog box will pop up, prompting whether to confirm the deletion of all data. After confirmation, all data will be deleted. If there is important data, you need to back up the data first, if there is no important data, just tap Confirm directly.

(9) The formatting process is relatively simple, generally after clicking confirm, there is no response for about 2 seconds, wait for a while (as shown below) the progress bar will go to the head. After it reaches the head, a dialog box will pop up prompting that the formatting is finished, so just click to confirm.

(10) After formatting is completed, the TF card is now ready. You can open the folder you just decompressed, select and copy all the files in the folder (the files in the decompressed folder are as follows).

(11) Copy all files in the folder to the following directory of the TF card.

(12) After the copy is completed, confirm the contents of the TF card as follows, mainly confirm the file name, file size and number of files.

(13) If the content is confirmed to be correct, the TF card is completed and you can unplug the TF card from the computer and use it.

3. Flashing

(1) Power off the Antminer K7 (unplug all power cords) and insert the prepared TF card.

(2) Power on the Antminer K7, that is, plug in all power cables.

(3) After powering on, the status of the indicator light is: the dual-light network port light is always on, the dual-light light is off, and the green light is always on after about 50 seconds.

(4) The green light is always on, indicating that the card swiping is completed.

(5) The green light is always on, which means the card swiping is completed. At this time, you can cut off the power and pull out the TF card (when pulling out the TF card, you need to press the memory card inward first, the memory card will partially pop out, and then pull it out).

(6) After unplugging the TF card, power on the control board again, turn it on and log in to the background to check whether the current miner version is the card firmware version.