China wholesale C19 - L3+ 504M Antivirus LTC DOGE Miner Control Board – KaLe

Antminer L3+ Antivirus Control Board can effectively avoid miner poisoning and make miners run more safely.
Treatment method for Antminer L3+ anti-virus
Method 1: SD card recovering

Notice

1) This method of operation does not require disassembly. Normal operation will not damage the blue tamper-evident sticker on the device. Please be careful not to damage the blue tamper-evident sticker due to misuse or carelessness.
2) The card-swiping firmware of some models has its own security firmware function, and there is no need to repeatedly upgrade the security firmware after card-swiping.

1. Application
1) The miner is powered off during the upgrade process
2) The miner cannot be started (IP cannot be found)
3) Only factory miners can be used

2. Preparation
1) Computer, XP system and above are fine
2) Card tray or card reader
3) 16G or below TF (Micro SD) memory card
4) The firmware of the mining machine should be downloaded to the computer in advance. After downloading, there is no need to unzip the firmware. Download address: https://service.bitmain.com.cn/support/download
(You must first select the desired product model in the menu on the left, and then click to download the corresponding firmware in the page on the right)
5) Download the program required by the TF card, and decompress the program after the download is complete. Download address: https://service.bitmain.com.cn/support/download?product=Flashing%20SD%20card%20with%20image

3. Program copy
1) Install the TF card on the card tray or card reader and connect it to the computer
2) Format the TF card as FAT32
3) Copy the decompressed file (TF card program) to the TF card, and remove the TF card.
Note: Copy the decompressed files to the root directory of the TF card, not the folder of the TF card!

4. Connect the TF card to the miner
1) Install the TF card on the control board, then power on the miner

2) After the miner automatically obtains the IP and starts to work, remove the TF card after power off (press it hard and it will pop out).
5. Upgrade the firmware. After powering on again, upgrade the firmware without retaining the configuration of the miner, and reconfigure the miner after the upgrade is complete.

Method 2: Antminer mining pool batch tool antivirus

Antivirus tutorial: https://support.bitmain.com/hc/zh-cn/articles/360036086773
This method is a batch operation, and is convenient to operate. It supports multiple models, so that it is recommended to use this method to kill viruses.