Press and hold the designated (commonly Volume Down, Volume Up, or both simultaneously depending on the specific device OEM).
Some USB-to-CAN interfaces (e.g., from China-based manufacturers) ship with a CD or USB drive containing OEM software, including older service tools. If you already own a compatible adapter, check the included media. spd service tool v1.0.0 free download
While the is legal and offered as freeware, you must use it responsibly: Press and hold the designated (commonly Volume Down,
The tool is optimized for a wide array of legacy and modern UNISOC/Spreadtrum chipsets, including but not limited to: including but not limited to: