Look for package (version 2.0.0.0 or later) that explicitly lists SC6531E or SC6531-series. Many all‑in‑one SPD driver packs are available from phone repair forums (e.g., SPD_Driver_R4.20.4201 ).
The big forums were useless. The links to the drivers had been dead for years, victims of link rot and cybersecurity scares where download sites were purged of "unverified" executables. The SC6531E was so old, most antivirus software flagged its drivers as malware simply because they didn't understand the language it spoke. sc6531e usb driver
The is an ultra-low-cost 2G GSM/GPRS mobile phone chipset from Spreadtrum (now Unisoc) . It’s widely used in feature phones, basic smart feature phones (e.g., running ThreadX or Mocor OS), and IoT modules. Look for package (version 2
pnputil /delete-driver usb2ser.inf /uninstall basic smart feature phones (e.g.