Another Windows process or an incorrect legacy driver has locked the USB port.
Install Cygwin with sunxi-tools package – but this requires Cygwin runtime, not a single portable .exe .
Acquire a pre-compiled Windows binary zip package of sunxi-tools from a trusted open-source repository or cross-compiled GitHub release. Extract the folder (containing sunxi-fel.exe , DLL dependencies, etc.) to a location of your choice, such as C:\sunxitools\ or directly onto a USB flash drive. Step 2: Configure the Portable USB Driver
Many TV boxes have a hidden button inside the AV jack or on the underside of the PCB. Hold this button down while plugging the device into your PC’s USB port.
sunxi-fel.exe uboot u-boot-sunxi-with-spl.bin sunxi-fel.exe write 0x2000 Image sunxi-fel.exe write 0x300000 sun8i.dtb sunxi-fel.exe exec 0x2000 sunxitools windows portable
The Ultimate Guide to Sunxitools Windows Portable: Flashing and Unbricking Allwinner Devices
Most users looking for a portable version want to avoid installing heavy development environments like MSYS2 or Cygwin. A portable build allows you to:
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Because FEL mode runs before the OS, you can dump the entire memory or storage of a locked device (assuming no hardware crypto). The read command bypasses software locks. Another Windows process or an incorrect legacy driver
You will need to source a pre-compiled Windows binary of sunxi-tools . While the primary repository is maintained on GitHub, many community members compile portable ZIP files for Windows. (Always ensure you download from trusted developer forums or the official sunxi community repositories). Step 2: Extract to a Logical Directory
While natively built for Linux, having a version of Sunxitools is a game-changer for developers who need to switch between machines without the overhead of a full Linux subsystem or virtual machine. What is Sunxitools?
Creating bootable images for raw NAND flash memory is notoriously difficult due to bad block management and error-correcting code (ECC) requirements.
: If you need the latest features, you can compile the tools yourself using Code::Blocks and the MinGW toolchain , though this requires patching the code for Windows compatibility (e.g., adding mman-win32 support). Extract the folder (containing sunxi-fel
: The primary tool for communicating with the board, uploading code to RAM, and flashing the bootloader.
While SunxiTools Windows Portable is incredibly powerful, users should be aware of certain limitations:
The most common tools included in these portable packages are:
A low-level routine embedded in the chip's ROM used for initial flashing and recovery.