<imgsrc="https://user-images.githubusercontent.com/8518150/179464273-7927420c-b60a-48ab-9eb9-d69b563c0a0b.png"align="center"alt="Flipper Zero FAQ"title="Flipper Zero FAQ">
</a>
<tablealign="center">
<tr><thcolspan="8">Table of Contents</th></tr>
<tr>
<td><ahref="#meta">Meta</a></td>
<td><ahref="#general">General</a></td>
<td><ahref="#sub-ghz">Sub-GHz</a></td>
<td><ahref="#nfc--rfid">NFC & RFID</a></td>
<td>Infrared</td>
<td>iButton</td>
<td>BadUSB</td>
<td>WiFi board</td>
</tr>
<table>
## Preamble
- *This is a community FAQ. Please consider also reading the [Official docs](https://docs.flipperzero.one/).*
- *This FAQ is still being worked on, and contributions are welcome.*
- *If your question isn't answered here, **SEARCH** the [Discord](https://flipperzero.one/discord) and check pinned messages before asking there.*
## Meta
### What is Awesome Flipper Zero?
It's an [Awesome List](https://github.com/sindresorhus/awesome/blob/main/awesome.md) that I ([djsime1](https://dj.je)) created shortly after receiving Lurat, my lovely dolphin sidekick.
## General
(TODO)
## Sub-GHz
### How do I hack my neighbors garage or unlock some random persons car?!?
Short answer: You don't. That's illegal, and NOT what Flipper was designed for.
### What does "This frequency can only be used for RX in your region" mean?
Due to legal regulations, Flipper is not allowed to transmit on certain frequencies depending on your order location.
For more information, read this: https://docs.flipperzero.one/sub-ghz/frequencies
If you have no regard for laws, you can use custom firmwares such as Unleashed to bypass this restriction **at your own risk.**
### How do I find the frequency of a device/transponder?
If it's a commonly used frequency, bring the device *really close* to the Flipper and use the Frequency analyzer.
If that didn't work, check for the device's FCC ID. It's legally required to be somewhere on the device if it's sold in the US.
Then, look up that ID on https://fccid.io.
### I can't tune Flipper to capture a specific frequency.
(TODO)
### I captured a garage/car/etc. signal, but it doesn't work when I replay it.
Unless the item of interest is extremely old, it probably uses rolling codes. Read more below.
### What is a rolling code?
Think of it like this: Imagine your garage door was programmed to open whenever it received the code "1234" from a transponder.
This would be a static code, where a replay attack (Read RAW) would be able to open the garage.
Since replay attacks are so easy, most devices will shuffle the code after each use.
So the first time you open your garage, the transponder sends "1234" and the second time it sends "5678."
Rolling codes aren't that simple, but you get the gist.
### I replayed a rolling code and now my original keyfob/transponder doesn't work.
You'll have to re-sync your old device manually, since it's now lagging behind on the rolling code.
### What is a Debruin/Brute force code?
A brute force code tries every possible code for a specific bit length, however this is inefficient.
Example: 0001, 0002, 0003, 0004 ... 9998, 9999.
Debruin sequences are more efficient by merging multiple codes together.
Example: 365, 136, and 650 can all be found in 13650 by looking at 3 digits individually.
