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The permissions for the dongle's USB device have to be set correctly. This is also handled by the udev rules. Using an outdated version of libusb can cause various issues. Make sure to update libusb to the latest version. Pairing problems. The controller only remembers the last device it was connected to. It will not automatically establish a. It is highly recommended to always use the most recent driver version available. Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer. Its important to install SPD drivers else Spreadtrum flash tools like Research Download, CM2 SPD etc won't be able to detect the phone. This is a collection of unsigned (.inf) drivers to be installed manually via device manager.

Its important to install SPD drivers else Spreadtrum flash tools like Research Download, CM2 SPD etc won't be able to detect the phone. This is a collection of unsigned (.inf) drivers to be installed manually via device manager. Additional USB drivers included are: SpreadTrum (sprd_enum) USB, SpreadTrum (sprd_acm_modem) Ports, Google Inc. (WinUSB) AndroidUsbDeviceClass and Android Net.

Download Spreadtrum (SPD) Drivers

• Spreadtrum SCI Android USB drivers
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• Spreadtrum Drivers
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• SCIUSB2SERIAL Drivers
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• SCI android usb driver jungo v4
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• SPD drivers 2015 ver2.0.0.131
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• SPD drivers 2016 ver2.0.0.131
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• SPD drivers 2018 ver2.0.0.131
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How to install Spreadtrum drivers

Download Medusa Research Usb Devices Driver Updater

After downloading and unzipping, follow the guide to manually install SPD drivers or see the video below. For drivers containing an executable (.exe), run the executable file and follow the driver installation Wizard

Download Medusa Research USB Devices Driver

Important Notice

Download Medusa Research Usb Devices Drivers

• The package contains SPD SCI drivers for both 32 and 64 bit Windows XP, Vista, 7, 8, 8.1 and 10 PCs.
  
• If you get an Unknown Publisher error during driver installation or use Windows 8 / 10 then ensure to disable Windows driver signature enforcement first
  
• For those looking for Spreadtrum ADB drivers, see the SPD ADB Fastboot driver installation guide
  
• This driver is sufficient for boxes like Infinity CM2 SPD, Miracle box, Piranha box, Falcon box, NCK Pro box, Volcano box, Medusa box, GPG dragon etc
  
• For the Google USB drivers, just run the DPInst.exe file. Only the SCI drivers need to be manually installed
  
• Some tools (e.g latest Research / Factory / Upgrade tool) might require that you update your drivers in order to work, simply download a higher driver version, install and retry the tool
  
• You might need to try different versions of the drivers if the installed version still doesn't work
  

Download Medusa Research Usb Devices Driver Windows 7