How to ‘Increase/ Max/ Optimize/ Tune/ Boost’ Hashrate Bitmain Antminer S9 Mining :Overclocking| Hashrate 21 Th/s./ Best Settings/ Is it Good for Mining? – Bitmain Antminer S9 is almost a legendary device that combines an extremely democratic price (which allows everyone to try their hand at mining) with pretty good characteristics.
Of course, in terms of energy efficiency, it is inferior to the top S17 – but for the same money you can buy several miners, which will improve the overall result, and most importantly, make a profit faster. To date, S9 has undergone many changes, and in the last year, Bitmain and then Crazymining released a fresh firmware on it with the connection of the Asic boost function.
How to Maximize Hashrate Bitmain Antminer S9 Mining
Mining with the Antminer S9 14Th/s profit in 12 days
What is this Asic Boost and why should I flash an already stable machine for the sake of it. It’s worth starting with the fact that this is an internal software solution provided by Bitmain itself – and it consists solely in optimizing the mining algorithm. Crazy mining went further and combined the standard Asic boost with its downvolting functions with overclocking of the ASIC operating frequencies, making it several times faster. Peak hashrate can reach 21 Th/s. Moreover, the base power consumption during such intensive mining has decreased by 200W, which increases its efficiency by almost 30% in relation to the old Bitmain firmware for Antminer S9.
Note: Don’t forget to check your pool to see if it supports the new firmware version. And of course don’t forget to check with your chip.
Vulnerability found in the firmware of ASIC miners for bitcoin mining Antminer S15
A few weeks ago, Bitcoin Core developer James Hilliard discovered a vulnerability in the firmware of the Antminer S15 ASIC miner manufactured by the Chinese company Bitmain. Twitter user 00whiterabbit subsequently created an exploit based on Hilliard’s findings, and Hilliard posted a video showing the bug working. Bitcoin Magazine writes about it.
Hilliard is willing to provide Bitmain with information about the vulnerability, but only if it complies with the popular GNU open source license, which the company is currently violating.
“Bitmain firmware is pretty buggy in general, ” Hilliard said.
It is important to the health of the Bitcoin network that Bitmain has the ability to fix these bugs.”
Hilliard, best known as the author of the BIP 91 bitcoin improvement proposal used to activate SegWit, discovered the vulnerability while examining a firmware update file on the Bitmain support site. He claims that the bug can affect not only the latest firmware version of the most powerful Bitmain miner for bitcoin mining on the SHA256 algorithm, but also other versions of the software.
“With a high degree of confidence, I can say that there are other vulnerabilities in this firmware. It is very poorly developed in terms of security ,” he added.
The described vulnerability allows you to get root access to the device. In theory, all the necessary operations can be carried out even remotely, knowing only the IP address of the miner, and then reprogramming it to set the settings the hacker needs.
For example, with its help, you can change the address of the bitcoin wallet to which the cryptocurrency is sent, completely stop mining, or install your own firmware.
In practice, however, an attacker is unlikely to find an unprotected miner. To protect themselves, users just need to properly configure the firewall or use a strong password. In addition, in order to create individual firmware, an attacker will need to gain access to the code of the original software.
“The more serious problem is that the Bitmain firmware as a whole contains a lot of bugs ,” Hilliard explained.
So, at the beginning of 2020, an anonymous cybersecurity expert discovered a vulnerability, which later became known as Antbleed and allowed to remotely disable Antminer devices. The problem affected not only the owners of the miners themselves, but also the bitcoin network as a whole, since it could lose half of its computing power overnight.
“Bitmain should, by right, open source its firmware,” Hilliard said, noting that the company’s software is based on its self-developed cgminer program, which supports an open source policy. “But Bitmain doesn’t seem to care about copyright. Unfortunately, closed-source firmware has a negative impact on the bitcoin network, as something similar to Antbleed may be hiding in it. This is one of the risks of centralization.”
The reason why Bitmain refuses to disclose the code of its software and violates the principles of GNU is not entirely obvious. Hilliard suggests that the company does not want users to set up the hardware themselves, depriving it of a possible source of income. Others assume that in this way Bitmain protects its devices from intruders who may try to find vulnerabilities in them for selfish reasons.
Hilliard, however, does not lose hope that the situation can change:
“In the past, they have published code that looked like the real thing, presumably due to public pressure. Maybe it will work now?”
Publication date 02/22/2019 Share this material on social networks and leave your opinion in the comments below.
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How to Tune Bitmain Antminer S9 To increase Hashrate: Installation order
For those who are familiar with the Bitmain Asic firmware, there will be no question of how to install a new firmware. For everyone else, we offer detailed step-by-step instructions that are suitable for both the standard Asic boost from bitmain and the Crazymining version. First we need to go to the Asic admin panel of the S9 miner and find the Upgrade section.
- First, let’s save our settings. On the System tab, use the “Keep Settings” function. In addition, you need to remove the selection from the checkbox about resetting the mining to the factory settings after the firmware. All this will allow us to greatly simplify the process of further setting up the miner after we flash the S9
- Next, at the source point for the firmware, select the Browse item and there we already select the Flash Image item indicating the path where your firmware is located.
- We expect. And if the firmware was carried out successfully, we reboot the miner and use all the innovations.
How to Boost Hashrate Bitmain Antminer S9 Mining: Instructions for Antminer S9 firmware
1. What pools can I mine on?
Today our firmware supports pools with Asicboost function:
Antpool: stratum+tcp://stratum.antpool.com:3333
F2pool: stratum+tcp://stratum.f2pool.com:3333
SLUSHPOOL : stratum+tcp://cn.stratum.slushpool.com:3333
BTC.COM : stratum+tcp://cn.ss.btc.com:1800
Other…
2. Firmware installation and overclocking
2.1 First you need to go to the admin panel of the miner, then go to the items ”SYSTEM”—“UPGRADE”
2.2 Uncheck the “Keep Settings” item, click “Choose File”
2.3 Choose a file
2.4 Press FLASH IMAGE and wait 120 seconds
2.5 After downloading the firmware, when loading the admin panel, an error 404 may appear, in this case, leave only the IP address of the device, delete everything else and click refresh the page (CTRL+F5), example: 192.168.1.138/cgi-bin/miner, part of CGI- bin/miner must be deleted, and the numbers 192.168.1.138 left and press Enter
2.6 After downloading the miner, you need to go to “MINER CONFIGURATION” and click “SAVE” to apply the settings of the new firmware.
2.7 Further in the column “MINER CONFIGURATION” – “MINER PROFILES” you can adjust the overclocking level of the ASIC, as well as apply other settings
(optional)
In the PRESET line, you need to select the overclocking level，also select the ASICBOOST – ON item to apply low-level power consumption. Click “SAVE” for the settings to be applied。
2.8 We made a DevFee section, now everyone can choose the most suitable server for themselves in terms of ping and stability.
After applying the settings, the ASIC needs 1.5 hours to automatically configure the optimal operation of the chips, during this period, ASICs will periodically reboot – this is normal!
Replacing the default @bitmain factory firmware with the optimized @crazy_mining firmware
Crazy Mining firmware is suitable for:
- for all Antminer T9+ control boards
- for all Antminer S9, S9i, S9j control boards except C5
- @asicfirmware – firmware support chat
- asic-firmware.com – firmware site
- @crazy_mining – chat about ASIC miners
- crazy-mining.ru – ASIC miners and hosting
Firmware uses AsicBoost Devfee firmware – 2% Recommended pools – btc, slushpool, antpool
FILES AND STEPS
Firmware through the web interface of the miner:
1. Download the cm_2.0 firmware update file:
– for Anrminer T9+ :
t9_custom_cm_2.0_upgrade.tar-1
– for Antminer S9, S9i, S9j, S9k:
s9_custom_cm_2…upgrade.tar-1.gz-1
2. Go to the web interface of the miner, section System -> Upgrade, remove Keep Settings (do not save settings), select the downloaded firmware file (tar.gz), click Flash Image, wait for the update process to complete and reboot the miner
3. Leave only the ip address of the miner in the browser line, press Enter, then Ctrl-F5, go to the Miner Configuration menu and click Save (save the settings of the new firmware), select the desired mode in the Miner Profiles section, make the rest of the settings. In the firmware for the S9 line, the login is “root”, the password is “”
4. Your ASIC now has the latest Crazy Mining firmware installed. After applying the settings, the ASIC will reach the optimal mode of operation within 1-1.5 hours, while its spontaneous reboots are acceptable. If reboots continue after that, you need to check the temperature of the hash boards and chips, reduce the frequency and voltage. Critical (harmful) chip temperatures: T9+ – 90C, S9 – 135C, S9i – 85C, S9j – 95C.
Come to support chat: @asicfirmware
- If the ASIC miner is behaving abnormally:
- before, during or after flashing
- does not connect, does not respond to the IP address
- hangs, does not load or hash boards disappear
- not flashed, hung, rebooted before the end of the firmware
- strange firmware behavior, virus
- flashing but not updating
- closed ssh
- password does not match
- complains about Signature not found (recovery only)
Troubleshooting methods (by situation and complexity)
1. Find the IP address of the miner -video -instruction and the program itself:
IPReporter.exe
2. Completely de-energize the miner for 20 minutes, turn it on again
3.Reset the control board
4. Make a RESTORE (Video 1 ) of the control board
5. Make a RECOVERY of the control board, if nothing helped, make the firmware via MicroSD, instructions below:
Video 1
Miner firmware via MicroSD (recovery)
1. Download the file recovery firmware update cm_2.0
– for Antminer T9+ :
t9_custom_cm_2.0_sd_recover
– for Antminer S9, S9j, S9i, S9k:
s9_custom_cm_2.0_sd_recover-2
2. Unpack the contents of the downloaded .zip archive to MicroSD and upload using the Rufus program. MicroSD card size must be no more than: Rufus-3.8
- 4-8 GB for T9 +
- 16 GB for S9, S9i, S9j
Larger cards may cause errors when flashing the control board
3. Disconnect the miner from the network, remove and completely disconnect the control board from power, hash boards, Ethernet network
4. For Antminer T9+, you can flash any model of the control board.
5. If you have an S9 line with a CRT0301 control board, then you prepared the MicroSD card in vain. CRT0301 does not have a microSD slot.
6. S9 line with C5 control board cannot be flashed either, this firmware is not compatible with C5
7. If your S9 control board says CRT0302., then to flash via MicroSD you will need to short the pins on it, as shown in this photo
8. In all other cases, including all T9 + control boards, and S9, S9i, S9j control boards, such as CRT0401, CRT0402 and many others (virtually most of all S9s ever released), you need to rearrange the jumpers to flash via MicroSD :
– from this position:
– in this position:
JUMPER MICROSD – position of jumpers T9+ and S9, S9i, S9j for booting via MicroSD (recovery)
9. Now you can insert the MicroSD card into the control board slot and connect the board to power. Make sure the card is inserted correctly – on some MicroSD control boards, the slot may be upside down.
10. Wait for the red and green LEDs next to the Ethernet port to blink continuously. This will happen in about 60 seconds and will mean that the board can be disconnected from the power – the firmware via MicroSD is completed.
– turning off the power, return the jumpers to their previous position and assemble the miner back
– this short video shows the whole process you just went through flashing your ASIC via MicrosSD
11. Your control board is completely cleaned of old firmware and settings, it has the latest Crazy Mining firmware installed.
12. Return to step 3 “Flash via web interface” to set up the ASIC and allow it to reach the optimal mode of operation. It is to point 3 – you don’t need to flash anything else, with MicroSD you have already installed the latest firmware version.
Summarizing
Regardless of whether you decide to flash your Antminer s9 from Bitmain with a fresh standard firmware or a third-party solution, remember that a well-flashed ASIC is a well-functioning ASIC. And finally, do not forget to check the data that your pool supports the new firmware version. Otherwise, you will have to spend a lot of time rolling back your miner to the previous firmware version. You can download the latest firmware for s9 by clicking the button below.
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