v3.9

Release Date: June 03, 2026

Supported boards:

• LimeSDR Mini V1
• LimeSDR Mini V2
• LimeSDR XTRX v1.2
• sSDR REV2
• HiperSDR_44xx

Highlights:

• GW refactor: Removed board dependency checking from multiple modules.

New gateware features/functionality:

• None

Fixes:

• LimeSDR Mini v2 GW corruption when writing VCTCXO non-volatile value to FLASH memory

Known Issues:

This release includes the major tested functionality, although minor bugs may still remain. Please report any issues to the project’s GitHub issue tracker.

v3.8

Release Date: December 22, 2025

Supported boards:

• LimeSDR Mini V1
• LimeSDR Mini V2
• LimeSDR XTRX v1.2
• sSDR REV2
• HiperSDR_44xx

Highlights:

• TX path rework: Buffer muxing logic replaced with Payload and MetaData RAM memory.

New gateware features/functionality:

• None

Fixes:

• Serial number read for LimeSDR XTRX
• Temperature read for sSDR board

Known Issues:

This release includes the major tested functionality, although minor bugs may still remain. Please report any issues to the project’s GitHub issue tracker.

v3.7

Release Date: December 22, 2025

Supported boards:

• LimeSDR Mini V1
• LimeSDR Mini V2
• LimeSDR XTRX v1.2
• sSDR REV2
• HiperSDR_44xx

Highlights:

• Firmware reorganization: Introduced BSP, Drivers and Periphery layers

• New boards: Added HiperSDR_44xx board support.

New gateware features/functionality:

• None

Known Issues:

This release includes the major tested functionality, although minor bugs may still remain. Please report any issues to the project’s GitHub issue tracker.

v3.5

Release Date: December 22, 2025

Supported boards:

• LimeSDR Mini V1

• LimeSDR Mini V2

• LimeSDR XTRX v1.2

• sSDR REV2

Highlights:

• Improved stability: Fixed several bugs on data streaming.

• Added mew functionality: LimePPSDO module support added for LimeSDR Mini V2 and LimeSDR XTRX boards

• New boards: Added sSDR board support.

New gateware features/functionality:

• LimePPSDO module

• Unix timestamps

• sSDR board support

Known Issues:

• This release is fully tested, although minor bugs may still exist. Please report any issues to the project’s GitHub issue tracker.

v3.0

Release Date: April 29, 2025

Supported boards:

• LimeSDR Mini V1
• LimeSDR Mini V2
• LimeSDR XTRX v1.2

Highlights:

• Built with LiteX Framework: This release is based on the LiteX framework, providing a clean, modular approach to FPGA development and enabling improved flexibility and future enhancements.

• Same Functionality as Original Gateware: The LiteX-based gateware maintains the core functionality of the original gateware, ensuring compatibility with existing software and use cases.

• Cross-Board Compatibility: Supports multiple LimeSDR board versions (LimeSDR Mini V1, LimeSDR Mini V2, LimeSDR XTRX v1.2) with a single gateware repository, simplifying the upgrade process and ensuring consistency across hardware.

• Improved Customization Potential: Using LiteX allows for easier customization and integration of new features or experimental functionality in the future. An example of FFT implementation is provided to showcase how users can adapt the gateware for their specific needs.

• Open-Source Programming with Unified JTAG Adapter: All three supported boards (LimeSDR Mini V1, LimeSDR Mini V2, LimeSDR XTRX v1.2) can be programmed using open-source tools and the same JTAG adapter, making development and updates easier and more accessible.

• LimeDFB integration: this gateware integrates Lime Digital Function Blocks (LimeDFB) to implement core functionality and makes it portable across different FPGA tool chains.

New gateware features/functionality:

• Currently there are no new functional gateware features introduced in this release. The gateware is designed to match the behavior and capabilities of the original bitstreams for each supported board, ensuring full compatibility.

Known Issues:

• This is the initial release, so while it maintains feature parity with the original gateware, minor bugs may still exist. Please report any issues to the project’s GitHub issue tracker.