Spreadtrum (SPD) USB Drivers must be installed on your PC. Tool: SPD Upgrade Tool (latest version). 2. General Process Launch the Tool: Open ResearchDownload.exe .

is a budget-friendly 4G smartphone typically powered by a chipset. Device Specifications Overview

| Source | Best for | Risk level | |--------|----------|-------------| | | Custom English/Russian firmware & unlock tools | Low (with antivirus) | | Huawei Hua (华域通信 blog) | Original CH/EN stock firmware backups | Low | | GitHub – M654_unlock | Open-source flashing scripts | Very low | | Telegram @M654Firmware | Live links for latest builds | Medium (scan files) |

We tested an M654-2.1 running stock 2021 firmware vs. custom v1.2.3 (June 2024).