Release Notes:
1. Enhance  anti-virus capability with  new security mechanism.
2. Add sleep mode.
3. Improve memory and temperature module.
4. Use new build tools to build firmware.
5. Remove the voltage calibration process.
6. Widen the scope of voltage difference inspection.
7. If upgrading the firmware through no keeping configuration file, it is need to configure miner account and miner pools to mine, otherwise(Upgrading through using keeping configuration file), it is no need to configure the miner and miner pools using previous miner settings to mine.  
 
Upgrade method:  
1. Check the current firmware version.
If the File System Version time is less than or equal to 2019,April 16, then
Upgrade the intermediate firmware V20190524 first.
Then upgrade the final firmware  V20200427.
update completed.
else
Directly upgrade the final firmware  V20200427.
update completed.
2. If you don't want to check the firmware version.
Upgrade firmware V20200427 directly.
If the mine upgrade is wrong: "Installer Not Signatured!!!" then
Upgrade the intermediate firmware V20190524  first.
Then upgrade the final firmware V20200427.
update completed.
else
update completed.

Intermediate firmware for S17

Release Notes:
1. Enhance anti-virus capability
2. Add sleep mode.
3. Improve memory and temperature module.
4. Use new build tools to build firmware.
5. Remove the voltage calibration process.
6. Widen the scope of voltage difference inspection.  
7. If upgrading the firmware through no keeping configuration file, it is need to configure miner account and miner pools to mine, otherwise(Upgrading through using keeping configuration file), it is no need to configure the miner and miner pools using previous miner settings to mine. 
 
Upgrade method:
1. Check the current firmware version.
If the File System Version time is less than or equal to 2019,April 16, then
Upgrade the intermediate firmware V20190524 first.
Then upgrade the final firmware V20200427.
update completed.
else
Directly upgrade the final firmware V20200427.
update completed.
2. If you don't want to check the firmware version.
Upgrade firmware V20200427 directly.
If the mine upgrade is wrong: "Installer Not Signatured!!!" then
Upgrade the intermediate firmware V20190524 first.
Then upgrade the final firmware V20200427.
update completed.
else
update completed.

Intermediate firmware for S17 Pro

Release Notes:
1. Enhance the miner stability under special conditions (e.g. low temperature and partial  high temperature etc.).  
2. Enhance  anti-virus capability with  new security mechanism.
Upgrade method: S17e use normal web style method to upgrade firmware.

Release Notes:
1. Enhance the miner stability under special conditions (e.g. low temperature and partial  high temperature etc.).  
2. Add more fans type support and update temperature control strategy.
3. Enhance  anti-virus capability with  new security mechanism.
Upgrade method: S17e use normal web style method to upgrade firmware.

Release Notes:
1. Enhance the working stability of the miner under special conditions (e.g. a certain range of low or high ambient temperature environment). 
2. Ehhance the protection function in this firmware during firmware upgrade, reboot, reconfiguring the mining pool, and entering the Sleep Mode function.(Note: This version firmware with protection function will have more protection waiting time compared with old firmware.).
3. Enhance  anti-virus capability with  new security mechanism. 
4. Enhance the power-off protection function in scenarios such as the hydropower station planned power outage or the planned shutdown and maintenance of the miners. The tips for using different scenarios are as follows. If there are other scenarios or unclear matters, please contact our technical support. 

Tips for the use of planned power outage scenarios in hydropower station: 
(1) Receive a power outage notice of the hydropower station more than half an hour in advance, and confirm that the hydropower station will be cut off after 30 minutes of power supply. 
(2) Use the btc tools v1.2.9 version (https://url.btc.com/btc-tools-download) to scan all the miners to be powered off. 
(3) Use the btc tools tool to set all the miners to be powered off from "Normal" to "Sleep Mode". According to the actual number of miners, this process usually takes more than 10 minutes. During this period, every effort should be made to avoid power outages. After 10 minutes, use btc tools v1.2.9 to scan all miners to ensure that all miners enter "Sleep Mode". 
(4) Cut down miners power supply after completing step 3.

Tips for power resupply scenario of the hydropower mine farm: 
(1) Make sure the power supply of the hydropower station is stable, perform the following steps (to avoid power outages after a short intermittent power supply). 
(2) The hydropower station supplies power, and all miners are powered on. 
(3) Use btc tools v1.2.9 version (https://url.btc.com/btc-tools-download) to scan all the miners to be powered on. 
(4) Use the btc tool to set all the miners to be powered on from "Sleep Mode" to "Normal" mode state. This process usually takes about 15 minutes according to the actual number of miners. During this period, we will try our best to prevent the miners from being powered off. After 15 minutes, use btc tools v1.2.9 to scan all the miners to ensure that all miners are in "Normal" mode and the hashrate is restored.

Tips for the planned power outage for maintenance scenario of the ordinary miner farms: 
(1) Half an hour before the power outage for maintenance, use btc tools v1.2.9 version (https://url.btc.com/btc-tools-download) to scan all pending power outages for maintenance of miners. 
(2) Use the btc tools tool to set to be scheduled for maintenance miners from "Normal" to "Sleep Mode". According to the actual number of miners, this process usually takes more than 10 minutes. During this period, every effort should be made to avoid power outages. After 10 minutes, use btc tools v1.2.9 to scan all miners to ensure that all miners enter "Sleep Mode". 
(3) Make sure that after step 3 is completed, perform miner power off and then perform maintenance activity.

Tips for the planned power-on scenario after the maintenance of the ordinary farms is completed: 
(1) Make sure that the task of power-off maintenance for the miners has been completed, and prepare to power on the miners. 
(2) All the miners that have been maintained in the farms are powered on, and use btc tools v1.2.9 version (https://url.btc.com/btc-tools-download) to scan all the miners to be planned. 
(3) Use the btc tools tool to set all the miners to be powered on from "Sleep Mode" to "Normal" state. This process usually takes about 15 minutes according to the actual number of miners. During this period, we will try our best to prevent the miners from being powered off. After 15 minutes, use btc tools v1.2.9 to scan all the miners to ensure that all miners are in Normal mode and the hashrate is restored.

Upgrade method: S17+ use normal web style method to upgrade firmware.

Release Notes:
1. Enhance the miner stability under special conditions (e.g. low temperature, etc.).
2. Enhance  anti-virus capability with  new security mechanism.
Upgrade method: S17+ use normal web style method to upgrade firmware.