Posts Tagged ‘cgminer 3.7.2 windows download


We now have a version of cgminer 3.7.2 available for mining Scrypt (LTC) only on the 5-chip Gridseed GC3355 ASIC devices with properly displayed local hashrate as well as HW error rate and the full cgminer 3.7.2 functionality (thanks to a user called dtbartle on GitHub). We have compiled a windows version of that miner that you can download and install it to finally have fully functional cgminer on your Gridseed Scrypt ASIC (source code available here). Have in mind that you need to install a WinUSB driver on top of the standard installed USB to COM driver for the miner in order for cgminer to detect and run on your ASIC in LTC only mode with low power consumption of about 8W.


– Download and run the latest version of Zadig
– From the Zadig interface select Options and choose List All Devices
– From the Dropdown list of devices select CP2102 USB to UART Bridge Controller and click on Replace Driver with the WinUSB driver selected
– If you have multiple 5-chip GC3355 DualMiner USB devices connected you may need to repeat the procedure for all of them
– Download, edit and run LTC_ONLY.bat file from the modified cgminer 3.7.2 for Gridseed ASICs to start mining for LTC

It seems that there are some ASIC devices that may be using different virtual USB to COM drivers other than the CP2102 that our unit has (for example ST32 Virtual COM Port), unfortunately we don’t have any of those to test with. You can however try to make things work by replacing the other driver with WinUSB, just select the right name from the dropdown box (do not try to rename drivers, it is pointless) and Replace it with WinUSB (you may need to unplug and plug the USB cable to the miner after that). If after installing the WinUSB driver over the virtual USB to COM driver the ASIC does not work with cgminer, you just need to uninstall the driver from the Device Manager and unplug/plug the USB cable to the device for it to install the original USB to COM driver and it should be functioning again with cpuminer (note that this way you may have it running on a new COM port).

Do note that if running single Gridseed ASIC device you can have it connected to the system and use the hotplug 0 option, if you have more than a single miner you may have to set commandline option hotplug to 5 or 10 and then run cgminer and start plugging the USB cables of the miners (USB hubs with power on/off buttons work great for that).

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


There is now an updated version of cgminer based on 3.7.2 (kalroth cgminer 3.7.3) with support for MaxCoin’s keccak (SHA-3) algorithm that is more stable and optimized than the previously available cgminer 3.6.6 with keccak support. So if you are still using the old version 3.6.6 of cgminer with keccak support, then you better update to the new cgminer 3.7.3 kalroth release for mining MaxCoins (MAX). You can also build the miner yourself from source if you wish.

You can download cgminer 3.7.3 karloth with GPU mining support for Windows OS here…


If you are mining Scrypt crypto currencies such as Litecoin or maybe DOGE, then you are most likely using cgminer as a mining software or something that relies on cgminer as a backend. The author of cgminer (Con Kolivas) however seems to have decided to continue support of cgminer only for ASIC mining for SHA-256 cryptos such as Bitcoin and version 3.7.2 is the last one for cgminer to support GPU mining for scrypt crypto coins. Furthermore the windows version of the last cgminer to support GPU mining has been removed from the official download location, you can however download cgminer 3.7.2 with GPU support for windows here.

More importantly, there are already some alternatives that are based around the original source code of cgminer 3.7.2, but add extra features and offer improvements that are not found in the original software. One such version based on cgminer 3.7.2 is Martin “Kalroth” Danielsen’s cgminer 3.7.2 that he calls cgminer 3.7.3 in order for the users to be able to differentiate between the original and his version. In cgminer 3.7.2 kalroth (cgminer 3.7.3) he has made changes to the visual interface to make it more user friendly and functionality that can help you squeeze a bit more performance out of your GPU mining hardware. Some of the notable differences include support for multiple pool load balancing, implementation for idle state for GPUs when there’s no work, two additional modes for controlling intensity – xintensity and rawintensity for additional performance, faster failover pool switching back delay and interface improvements such as uptime status or percentage of rejected shares and so on. Definitely something to try and see if you like this version of cgminer better than the original 3.7.2.

You can download cgminer 3.7.3 karloth with GPU mining support for Windows OS here…