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Updated cgminer 3.7.2 for Windows Scrypt mining on Gridseed 5-chip GC3355 ASICs

15 Mar


We have compiled an updated version of the cgminer 3.7.2 for Gridseed 5-chip ASIC devices with some small fixes and have an option to try and overclock the device over the previously available maximum limit of 1000 MHz. Now you can try running the device at 1050, 1100, 1150, 1200, 1250 and 1300 MHz, though these in our experience going past 950 MHz will most likely produce only hardware errors, you are still welcome to try. So far 850 MHz operating frequency for Scrypt only mining mode seems to produce the best results with most devices, though you are welcome to experiment with yours. For a guide on how to install and use the Gridseed 5-chip ASICS with this cgminer. Also note that cgminer 3.7.2 for Gridseed does require you to replace the standard virtual USB to COM driver with WinUSB driver with the help of the software Zadig in order for cgminer to be able to detect and use the GSD ASIC devices.

You can download cgminer 3.7.2 for Scrypt mining on Gridseed 5-chip GC3355 ASICs on Windows OS here…

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15 Responses to Updated cgminer 3.7.2 for Windows Scrypt mining on Gridseed 5-chip GC3355 ASICs


March 15th, 2014 at 22:56

Hi Admin,

Thank you for all the good work you guys are doing.

Just few issues I’ve found which I like to let you know.
1. The new version does not accept above 1000 freq it defaults back to 600.
2. I’m having to constantly unplug my USB before starting CGminer. Will you be able to fix this issue?

Thanks for all the stuff you are doing.


March 15th, 2014 at 23:26

Make sure you have downloaded and using the new version, we have just tested it and it fires up with 1100 and 1200 just fine, the previous version was up to 1000, though all we are getting at these frequencies with our miners are HW errors. The max stable we got with low to no HW errors was at 850, the frequency that we are recommending for OC of these miners. Doesn’t hurt to try though, unfortunately there are still some bugs that need to be fixed in all of the miners that support Gridseed ASICs.


March 16th, 2014 at 00:06

I’m running the exe from 15 march and when I set freq above 1000 it’s defaults to 600. I’m running it via cgwatcher.


March 16th, 2014 at 12:04

Really weird, we have retested again here and it works just fine when running directly, have you tried withour cgwatcher?


March 16th, 2014 at 17:37

I’ve just tried this again and outside CGwatcher and I get the same issue. Try and download from the link you’ve provided and see if you get the same error.


March 16th, 2014 at 21:37

Buddy, we have tried it again with a different ASIC and it starts up at 1100 and 1200 MHz just fine. Something is definitely wrong on your end, please post your command line parameters here. You are trying 1100 and 1200 as frequency options, right?


March 17th, 2014 at 08:41

I’m trying 1050 may be I should try 1100


March 17th, 2014 at 11:53

Buddy, that is the problem, 1050 was not supported, only 1100 and 1200. We have updated the miner to also support that frequency and up to 1300, so download again and try it now.


March 17th, 2014 at 20:35

1100 works thx


March 18th, 2014 at 04:55

Cgminer crashes when using two or more Gridseed devices on Windows 7. Is there a fix for this?


March 18th, 2014 at 08:36

Sometimes we are experiencing crashes with even single device, unplugging and plugging the USB back and running the cgminer again usually does the job. Alternatively you could also try the bfgminer with Gridseed support.


March 28th, 2014 at 06:19

For the crashe with more than two devices I found this:
–hotplug 5 instead of 0 .
After start cgminer, let him connect to a pool. After plug one by one (each 5 seconds) to the pc.


March 28th, 2014 at 08:36

MK, no need to plug them one by one, if you have the devices connected to a USB hub you can plug the whole hub at once… or one by one without having to wait for 5 seconds for each, they will be detected and started. We have tried that and it works very well and no more crashes this way if using more than one device.

Gridseed Issues

April 24th, 2014 at 22:11


I am finding that when I have my gridseed units connected to my pc running cgminer. Sometimes a miner stops working; however, it automatically reconnects itself.

The issue I am having is that when a miner reconnects, it increases the number of devices connect, not removing its old spot in the list.
What is more troubling, is that the now “ghost” device keeps hashing away, although no new shares are accepted or rejected, CGMiner continues to report it @ 360kh/s

Anyone else having this problem?



February 28th, 2016 at 16:10

yes i’m having the same problem

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