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Updated CGMiner 4.3.5 with GridSeed and ZeusMiner Scrypt ASIC Support

21 Jul


We have compiled a new windows binary of the cgminer 4.3.5 fork from the latest source with support for the Zeus-based Scrypt ASIC miners as well as Gridseed Scrypt ASICs by dmaxl. People had some trouble making the previous release work properly, especially if trying to run multiple different ASIC mienrs, so with the updated one things might be running a bit better. Do note that supports both direct serial access by specifying the COM port the miner is attached on or by using WinUSB drivers with the help of the the Zadig software (check the Readme file for more details).

You can download the updated cgminer 4.3.5 with Zeus and Gridseed Support for Windows OS here…

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18 Responses to Updated CGMiner 4.3.5 with GridSeed and ZeusMiner Scrypt ASIC Support


July 22nd, 2014 at 12:10

Bat file for Gridseed???


July 23rd, 2014 at 07:01

Many thanks, guys. That’s the first time your CGMiner agreed to work with my Hurricane X3.

Although direct COM port reference still doesn’t work. Now it complains “The user does not have enough privileges to open COM4”.

However, installing WinUSB driver from Zadig and removing “–scan-serial” option at all suddenly and unexpectedly worked.

I have to admit your fork is more stable than BFGMiner.

Once again – thanks, my appreciations and keep on with fantastic job.

Mark T

July 30th, 2014 at 13:52

This miner is the best of all I have used (and I have tried them all). I have all sorts of devices hooked up: several Gridseed 5 and 40 chip, as well as Zues blizzard and thunder. All running harmoniously on one instance of CGminer. So far 10 devices and it runs great. My thunder is actually hashing at 30 Mhash, confirmed at the pool, a first.


August 1st, 2014 at 20:17

I can run overclocked Gridseeds without any issues with almost any miner, including cgminer, for many months now.

Last month in July I bought “The Fury by GAWMiners” which is the equivalent to the “Zeus Blizzard” miner.

But when I try to run the Zeus Miner I get errors and serious troubles only. Today my AC/DC adapter (12V/5A) even exploded while running my miner, for some unknown reason! :(
And I had to connect a new adapter. I was lucky, because nothing happened to the miner hardware itself.

First I installed the proper usb driver “Silicon Lab CP210x USB UART Bridge” on my Windows (Vista).
Then I used Zadig to install the driver as a WinUSB, so cgminer can detect it.
I also removed the “–scan-serial” option, as one of the previous users suggested here.

Then I started this cgminer 4.3.5 release with my batch…

At first everything looked fine and I got the following display line in cgminer:

0: ZUS 2:2 : Blizzard 328 Mhz | 1.447M / 1.447Mh/s

But after about 15 minutes of mining a critical error happened, similar to the “Device disabled. Device re-enabled….” connection failures I often get with bgfminer.

The cgminer error log reads as follows:

ZUS 0 SendWork usb write err:(-7) LIBUSB_ERROR_TIMEOUT
ZUS 0 attempted reset got err:(0) LIBUSB_SUCCESS
ZUS0: I/O error while sending work, will retry

It repeats those lines infintely. So I have to quit cgminer and restart my Zeusminer.
And when I do it and run everything again it works fine.
Sometimes the “timeout” error occurs again and again, same as in bfgminer.

I’m getting really frustrated about this permanent connection or usb timeout failures and I have no clue how to fix this…… This never happens when I run my Gridseeds, so it’s not a problem with my ISP online connection but with the zeusminer hardware.

Also, I have to mention that I get lots of hardware errors (HW) when running zeus at 328 clock speed.
So I lowered it to 300, but the HW’s are still high.


August 1st, 2014 at 21:21

Fury, check your USB cable, try different USB port, try without a USB Hub if you are using one…


August 1st, 2014 at 22:10

Thanks, admin. I solved the problem.

My USB porthub was fine. A malfunctioning USB cable was the source of the error. I plugged in a new USB cable, from another Zeusminer I bought but haven’t used yet, and now it works perfectly fine.

Mining for over 1 hour now without any usb timeouts or connection failures.
Looking good. I will see after 24 hours if it keeps running stable… :)

However, as I mentioned before, I run the whole thing with 300 mhz clock speed now, since 328 seem to already be overclocked and produce too many HW’s.

When everything keeps working in good fashion then I will plug in my second Zeusminer and all of my Gridseeds. I really need a mining software with which I can mine with different multiple hardware devices. I also like to have a feature where I can set all the mhz clock speeds for gridseeds and zeusminers by myself in my batch file.

I hope to see more updates and rebuild versions of cgminer, bfgminer, cpuminer and other which provide those features.

Samer Serhan

August 10th, 2014 at 11:11

“The user does not have enough privileges to open COM5′ I keep getting this message. I tried removing the com line and installing usb driver, but the hardware errors went through the roof, so i went back with zeus’ driver
but still cant use this due to the privilege error (i tried moving folder to C drive, same problem)


August 25th, 2014 at 01:25

I am trying this version with 6 gridseed blades. I also tried with a single one plugged directly into the computer thinking it might be my usb hubs still same error which is “gsd0 sendwork usb write err:(-12)”

Any thoughts?



September 11th, 2014 at 03:36

I’m running Windows 8.1. I also get the “do not have privileges to open COMx” message. The USB (Zeusminer) device is recognized in device manager as COM4. I know because I opened device manager->comm ports before connecting USB cable and when I did, the device popped up as USB Com4. Win 8.1 automatically recognizes USB on Com4. Why another device driver?


September 11th, 2014 at 19:07

Never mind. Figured it out. Hope I didn’t waste anybody’s time…


September 16th, 2014 at 14:01

try use –scan-serial zeus://./COM4

example: cgminer –scrypt -o stratum+tcp:// -u xxxx.xx -p x –scan-serial zeus://./COM4 –zeus-chips 6 –zeus-clock 328 –zeus-nocheck-golden

this work for CP210x


October 15th, 2014 at 21:02

this version disable sha256 by default?


October 15th, 2014 at 21:31

Yes, the SHA-256D cores are disabled and only the Scrypt ones are working with this miner.


December 3rd, 2014 at 22:00

I wish someone would figure out how we can restart the software without restarting the hardware. Anyone else despise this issue?

Run Forest Run

December 28th, 2014 at 11:35

This worked for me.
start cgminer.exe –$Algro –queue=$Que -o http://$Url:$Port -u $User -p $Passwd –zeus-chips $Chips –zeus-clock $Freq –scan-serial zeus://./$ComPort


Aung Kyaw Lin

July 22nd, 2016 at 16:10

Dear Admin, My Gridseed miner run bfg miner and cgminer with gridseed support. But bfg miner only get shares and cgminer doesn’t get any shares and it discard all the works. What is the possible reason for that statement, Sir.
Thanks in advance.


December 8th, 2016 at 15:07

I had “The user does not have privileges to open COM3” error.

–scan-serial zeus://./COM3

That fixed it, don’t know why, don’t really care, it works. Hope it helps.


June 9th, 2017 at 11:32

Anyone know how to increase gridseed clоck in cgminer. Running at 600mhz. Want to up it to 800mhz. Not sure what to put in the batch file startup

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