> about
Built out of frustration with someone else's black box.
Xiaomi Killer started the way most repair tools do — not as a product idea, but as a workaround.
Years of flashing, unbricking and unlocking Xiaomi, Redmi and POCO devices meant relying on a patchwork of third-party tools: mostly undocumented, occasionally unsafe, and always somebody else's closed process. When a flash failed, there was rarely a clear answer for why.
Building a custom tool meant being able to see exactly what an operation does before it touches a device — which partitions get written, what a Firehose loader actually verifies, what a repacked image looks like before it's flashed back. That visibility is still the standard the tool is held to today.
It's built in C# / .NET, runs as a native Windows app, and is maintained by the same person who uses it on the bench every day.
Polash Hossan
Mobile device repair technician and the sole developer behind Xiaomi Killer. Works hands-on with ADB, Fastboot, EDL and FRP-unlock workflows daily, and builds the tooling that workflow actually needs.
> what it's held to
Principles, not marketing copy.
- Logs over guesswork — every operation prints what it's doing, in order.
- No partition gets overwritten without a backup path first.
- Built and tested on real devices, not assumed from a spec sheet.
- No bundled adware, no forced subscriptions, no fake "scan" results.
- Currently built and maintained solo — slower releases, but no scope creep.