In a previous blog post, I introduced Feberis, a versatile expansion board that enhanced the capabilities of the Flipper Zero by offering additional communication protocols. Now, I am excited to dive into the newly released Feberis Pro, a next-generation expansion module designed and distributed by Sapsan-Sklep. This blog will cover what Feberis Pro is, how it differs from the original Feberis, its features, potential use cases, and where to purchase it. In the video below, you’ll get a glimpse of its design and see a demonstration of various features in action.

What is Feberis Pro?

Feberis Pro is an expansion board for the Flipper Zero that enhances its capabilities by integrating multiple communication protocols into a single compact module. Just like its predecessor, Feberis Pro requires an unofficial Flipper Zero firmware to unlock its full potential. With Feberis Pro, Flipper Zero enthusiasts can explore a broad spectrum of wireless technologies, making it an essential tool for security researchers, pentesters, and hobbyists.

Differences Between Feberis and Feberis Pro

The original Feberis was a 2-in-1 module that allowed users to swap between CC1101 and NRF24 on top of ESP32 to maintain a compact form factor. Feberis Pro takes things to the next level by integrating four technologies into a single, feature-packed expansion board. This makes it a true 4-in-1 solution, offering even greater versatility.

A key upgrade in Feberis Pro is the inclusion of two CC1101 modules:

• One is calibrated for 400MHz frequencies.
• The other is optimized for 800MHz frequencies.

While scanning works on both modules, the difference lies in range and effectiveness. Each CC1101 module is fine-tuned for its respective frequency, similar to how SDR (Software-Defined Radio) users select antennas optimized for different frequency ranges. Lower frequencies tend to have better penetration and longer range, whereas higher frequencies are better for short-range precision.

This design ensures that users can always achieve the best performance when capturing signals. However, due to Flipper Zero’s hardware limitations, only one CC1101 module can be used at a time. The Flipper Zero detects only one module, so users must manually switch between them using the side switch on the Feberis Pro housing.

Additionally, Feberis Pro includes a GPS module, which was not present in the original Feberis.

Features of Feberis Pro

Feberis Pro comes equipped with five powerful integrated modules, each providing unique functionality:

• 2 x CC1101 radio modules (433 MHz and 868 MHz) – Enables communication with a wide range of RF devices.
• NRF24 radio module (2.4GHz) – Useful for wireless data transmission and interacting with various devices.
• ESP32 microcontroller with WiFi (2.4GHz) – Expands connectivity options and supports advanced scripting.
• GPS module – Allows mainly for wardriving tasks.

Additional Features

• Each module has an external, removable antenna for enhanced range and performance.
• Physical switch buttons for control of different modules.
• LED status indicators to provide real-time module activity feedback.
• GPIO pins align perfectly with Flipper Zero, ensuring easy connectivity.
• Protective cover is recommended to prevent damage to the pins when the module is not in use.

More Technical Details

Power Consumption

Feberis Pro does not require external power. It is fully powered by the Flipper Zero, ensuring ease of use and portability.

Firmware Support

Feberis Pro is compatible with all unofficial Flipper Zero firmware, including Momentum, Unleashed, and RogueMaster.

Setup Guide

Setting up Feberis Pro is incredibly simple:

• Just connect it using the GPIO pins on the Flipper Zero. The pins are specifically aligned, ensuring that users cannot make a mistake when attaching it.
• Once plugged in, users can select which module to enable using three switch buttons on the side.

This intuitive switching mechanism makes it easy to toggle between different modules without complicated configurations.

Use Cases

Feberis Pro unlocks more possibilities for Flipper Zero users. Here are some practical use cases:

• RF Communication & Security Research:
  • Radio signal analysis, receive, clone and transmit radio Sub-GHz signals to open gates, garage doors, and remote key systems etc. from a larger distance.
• NRF24:
  • MouseJack attacks – Hijack wireless keyboards and mice using the NRF24 module.
  • Experiment with custom NRF24-based communication systems.
• ESP32 with GPS:
  • Run Marauder for Wi-Fi scanning, deauthentication attacks, packet sniffing, and Bluetooth operations.
  • Conduct wardriving by mapping Wi-Fi networks based on GPS location.

These use cases make Feberis Pro an excellent choice for RF security research, ethical hacking, and wireless experimentation.

Where to Buy

Feberis Pro is available for purchase exclusively through Sapsan-Sklep for around $103 USD including VAT. The store offers worldwide shipping, ensuring that Flipper Zero enthusiasts from all over the globe can access this powerful expansion board.

Part of a package are all four antennas and GPIO cover case.

Security & Ethical Considerations

Feberis Pro is a powerful tool intended for educational and security research purposes only. Users must ensure they comply with local laws and regulations when using the device. Unauthorized use of radio frequencies, hacking into networks, or intercepting communications without explicit permission is illegal and punishable by law.

Always use Feberis Pro ethically and responsibly to contribute positively to the cybersecurity and research community.

Conclusion

Feberis Pro is a game-changer for Flipper Zero users who want to take their device to the next level. With its 4-in-1 design, five integrated modules, enhanced connectivity, and GPS functionality, it surpasses the original Feberis in every way. Whether you’re a security researcher, pentester, or enthusiast looking to explore the world of RF communication, Feberis Pro is an essential upgrade.