FIRMWARE UPDATE GUIDE FOR VNISH VERSION 1.2.1

• The time required for auto-tuning has been reduced by 55%.
• The auto-tuning algorithm has been changed from aggressive to conservative.

WAS
In the previous auto-tuning process, there was an uptick in power consumption during the initial stage of chip parameter selection. This increase posed limitations on overclocking ASIC equipment and necessitated additional expenses, such as heightened cooling requirements or the adoption of expensive immersion cooling methods, along with extra strain on infrastructure.

NOW
With the new algorithmic approach, we've introduced a gradual "bottom-up" parameter adjustment. This enables the equipment to operate smoothly without surpassing the predefined power consumption limit, maintaining optimal temperature levels. Importantly, this adjustment is seamlessly integrated, allowing for auto-tuning without the need for mining restarts.

• An adaptive voltage adjustment function has been added to maintain a stable hashrate at any time of day and night, and under two temperature modes: manual and immersion.

PROBLEM WITH ASIC MINERS
For any miner, a 1-degree change in the surrounding environment affects the hashrate. During nighttime, the chip temperature decreases, leading to a drop in hashrate. ASIC miners lack the ability to automatically adjust power consumption in proportion to the hashrate. For large farms, this results in significant expenses.

SOLUTION
The VNISH firmware now assists ASIC miners in operating stably without shutdowns when temperature conditions change, both during the day and at night. The auto-tuning control function smoothly and carefully adjusts the chip voltage, preventing overheating and shutdowns. You asked for it - we delivered!

For miners in Immersion mode the improved adapt voltage to temperature feature has been enhanced to compensate for fluctuating fluid temperatures that before would effect hashrate negatively.

A couple of versions ago, based on user requests, we introduced the ability to pause the ASIC miner during a restart or shutdown and resume it in the same state it was paused.

Subsequently, the ASIC miner would uncontrollably restart in case of operational errors. For the miner, this translated to increased wear and tear on the equipment and a decrease in the efficiency of the chips. Often, the owner of the ASIC equipment was unaware of how many times the equipment had been restarted and why one of the ASICs suddenly malfunctioned, despite having a perfectly tuned overclocking profile. There was no understanding of what error had halted the operation.

All of this led to increased energy consumption when restarting the ASIC miner, resulting in unplanned electricity expenses. Additionally, the urgent replacement of the malfunctioning ASIC miner was often required. As a consequence, all these issues significantly impacted the wallet of the ASIC equipment owner and jeopardized the motivation to continue mining.

• An adaptive temperature control function has been added.
• A preset switching function without mining restart has been implemented.

These two functions assist in monitoring the miner's operation without restarting to adjust chip performance, enabling users to achieve their desired hashrate level.

• An option to ignore non-functional temperature sensors has been added.
• An option for automatic unpausing of the miner after a complete restart has been included.

It is worth noting that previously, the "Pause Miner" function was triggered in the absence of internet connectivity or if the miner was automatically paused. By adding this option to the Advanced Settings, we have provided the ability to automatically unpause the ASIC miner in the event of a power outage and restoration. The miner will resume operation in the same mode in which it was temporarily paused.

• A default password has been set for the Hotel FeePool.

This option is beneficial for Mining Hotels, Data Centers, and any other mining business that deals with various mining pools or for users that need to do a revenue share at the firmware level.

• The operation of the miner cooling function has been improved.

PROBLEM WITH ASIC MINERS
In cold weather, with outdoor temperatures ranging from 0 to 7 degrees Celsius, the target temperature for the ASIC miner in a stable mode is 65 degrees. However, at the start of operation, the temperature exceeds the target and increases disproportionately, leading to overheating and the shutdown of the ASIC miner. The old algorithm for the automatic temperature maintenance mode did not allow for optimizing stable temperature maintenance at startup. This resulted in device overheating, rendering mining inoperable. It was necessary to raise the room temperature.

SOLUTION
We have now redesigned the temperature maintenance algorithm. The fans start adjusting their rotation speed smoothly, preventing the temperature from rising above or falling below the target temperature, thus maintaining a temperature increase without overheating and shutdown of the ASIC miner. Additionally, the setup and temperature rise time to the target have increased. Now, you can start the ASIC miner even in cold conditions without risking overheating. The new ASIC miner cooling algorithm brings stability and predictability.