1. Applicable mode

1.1 M3x, M2x series；

2. Details

2.1 H3 control board card brush system file, including instructions and burning software；

2.2 If 201-8410 error codes come out after flashing the program, then you need to upgrade the *.bin firmware with whatsminertool to solve it.

2.3 Teaching video: https://youtu.be/WxqchyZvQkA

1. Applicable mode

1.1 M21S, M20S, M21,etc;

1.2 High mode can not be supported;

1.3 Teaching video: https://youtu.be/L-gpDzD9YCU

2. New version highlights

2.1 Support Pool TLS safety transportation protocol;

2.2 If the miner firmware is before 2021, it is recommended to upgrade the firmware after SD-card flashing;

2.3 Strengthen the safety of firmware: device will reboot 2 times during upgrading,the version name will be end with”NeedUpgradeAgain” at 1st time，please wait for 2nd reboot, after that it will be changed to target version;

2.4 Fixing other bugs;

2.5 Online upgrading to version earlier than 20210602 is prohibit，suggest to match with tool whatsminertool-8.1.34;

2.6 The WhatsMiner API version is V2.0.5;

1. Applicable mode

1.1 M60 series/ M50 series/ M30 series etc.；

1.2 Support only for H616 (CB6) type, for other type(CB2/CB4), please contact after-sales service

1.3 Tutorial video: https://youtu.be/L-gpDzD9YCU

2. New version highlights

2.1 Support Pool TLS safety transportation protocol;

2.2 Support to define customer SN ;

2.3 Strengthen the safety of firmware;

2.4 Support fast hash function;

2.5 Rolling back to earlier version is prohibit，suggest to match with tool whatsminertool-9.2.1；

2.6 If your whatsminer firmware version is newer than this firmware version, please do not upgrade!

1. Applicable mode

1.1 M3x, M2x series；

2. Details

2.1 H6 control board card brush system file, including instructions and burning software；

2.2 After that you will need to upgrade the latest firmware,if the miner is not upgraded, there will be error code 201-8410;

1. After that you must upgrade the latest firmware, if the miner is not upgraded, there would be error code;

2. Applicable to M5x, M3x and M2x series；

3. Teaching video: https://youtu.be/WxqchyZvQkA;

1. After that you must upgrade the latest firmware, if the miner is not upgraded, there would be error code;

2. Applicable to regular miner with M6X, M5x and M3x series ；

3. Tutorial video: https://youtu.be/WxqchyZvQkA;