Phoenix UEFI Winflash is a Windows-based utility used to update UEFI/BIOS firmware on supported PCs that use Phoenix-based firmware. It lets OEMs, IT admins, and advanced users apply official firmware images directly from within Windows—eliminating the need for bootable media—while performing common safety checks such as model and version validation and power-state verification. Many packages also offer options to back up the current firmware, run silently via command line for deployment, and preserve selected settings, depending on the OEM’s configuration.
Typical use cases include installing an official BIOS/UEFI update, performing fleet updates in managed environments, and restoring compatibility or fixes delivered by the system manufacturer.
Important: Firmware flashing carries risk. Use only the update specifically released for your exact system model, keep AC power connected, close other applications, and avoid interrupting the process. If your system uses disk encryption (for example, BitLocker), suspend it before updating and resume it afterward.
Phoenix UEFI Winflash is developed by Phoenix Technologies Ltd. and is used by 5 users of Software Informer. The most popular version of this product among our users is 1.5. The name of the program executable file is winflash.exe.
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