Essential for tools like SPD ResearchDownload or UpgradeDownload to write new software to the device.
Windows 10/11 requires digitally signed drivers. Since some Spreadtrum drivers are old, you may need to disable this: Go to . Under "Advanced startup," select Restart now . sprd u2s diag -com 22- drivers download
If the device isn't listed, use the "Add legacy hardware" option from the Action menu in Device Manager to manually point to the extracted Troubleshooting Common Issues Device Not Found/Waiting: Under "Advanced startup," select Restart now
Spreadtrum Communications (rebranded as ) designs budget-friendly mobile processors used globally in feature phones, entry-level smartphones, smartwatches, and tracking modules. Under "Advanced startup
To clear errors and correctly map your device to COM 22, select an official driver configuration from the verified vendor packages summarized below. Driver Package Source Architecture Compatibility INF File Target Best Use Case Windows 7, 8, 10, 11 (32/64-bit) sprdvcom.inf Universal Spreadtrum Android smart devices Quectel Wireless Driver Pack Windows 10, 11 (64-bit) musbser.inf Embedded IoT modules & cellular development boards Lenovo/OEM Specific Package Windows 8, 10 (32/64-bit) sprdadb.inf Vendor-locked feature phones and legacy tablets Step-by-Step Installation Manual