As of May 2026, the only authoritative sources are:
XDA-Developers Forum Thread: "Allwinner FEL mode tools for Windows (Verified)"
Arch Linux ARM (via MSYS2): If you use MSYS2 on Windows, you can pacman -S mingw-w64-x86_64-sunxi-tools. sunxitools windows verified
Do NOT download from:
Many cracked or modded tools have broken FEL handshake protocols, causing "Device Not Detected" errors. A verified version guarantees correct communication with Allwinner chips in FEL mode. As of May 2026, the only authoritative sources are:
Given the rise of supply chain attacks, it is reasonable to ask: Even a verified tool could become malicious if the developer is compromised.
The SunxiTools team addresses this with reproducible builds. Every verified release comes with a checksum (SHA-256) posted on a separate, static website. Before running the installer, compute the hash: XDA-Developers Forum Thread: "Allwinner FEL mode tools for
Get-FileHash .\SunxiTools_Installer.exe
Compare it to the official hash. If they match, you have a cryptographic guarantee of authenticity.
Furthermore, the verified version is open-source (core modules). You can inspect the code for CreateRemoteThread or WriteProcessMemory calls—there are none. The tool operates strictly within documented Windows APIs.