December 2025 monthly summary for LedgerHQ/ledger-secure-sdk: Delivered key UI rendering improvements, robust UTF-8 handling, and enhanced test infrastructure. These changes increase product reliability, localization readiness, and CI confidence, enabling safer releases and smoother adoption of upcoming features.

November 2025: Ledger-secure-sdk delivered notable advancements in text rendering, typography, and storage efficiency. Implemented comprehensive font rendering enhancements (Thai font support, Unicode handling, and text layout improvements) and introduced a refactor that centralizes rendering logic in nbgl_draw_text. Added RLE-based text rendering and character data compression to reduce asset footprint and boost rendering performance. Expanded testing coverage with unit tests for nbgl_draw_text and new RLE workflows. Adjusted layout and metrics for modern devices (LNX/LNS+) and improved correctness (no longer requiring Y coords modulo 4). These changes improve on-device readability, internationalization readiness, and overall performance, contributing to a better user experience and lower maintenance costs.

Month: 2025-09 — LedgerHQ/ledger-secure-sdk focused on UI stability improvements for screenshot rendering and header layout to improve reliability and reduce post-release issues. Delivered two major updates: (1) Screenshot Rendering Improvements: boundary clipping enforcement, sizing via global screen dimensions, and overlap detection to prevent occlusion and artifacts. (2) Header Title Layout Stabilization: detection of excessive lines, dynamic height adjustment to fit maximum lines, and warning logs when limits are exceeded. These changes were implemented via incremental commits and improved rendering reliability across devices and configurations.

August 2025 – LedgerHQ/ledger-secure-sdk: Focused BLE advertising fix to properly handle device names up to 20 characters. Longer names remain discoverable and BLE connections are more reliable, reducing user friction during pairing across diverse environments. Commit 1ee0551dac9f971e383167f10e32f0ef96b4dd43 documents the change (FWEO-1477).

June 2025 monthly summary for LedgerHQ/speculos. Focused on API-level compatibility and code quality improvements. Key outcomes include delivering IO Revamp and API level 24 support, updating RC5 compatibility for API level 23, and enforcing code style consistency with clang-format. These changes improve cross-version compatibility, build stability, and maintainability, enabling faster releases and more predictable behavior across devices.

Month: 2025-05. Concise monthly summary focused on key accomplishments across LedgerHQ/ledger-secure-sdk and LedgerHQ/speculos. Delivered security-first features, major bug fixes, and cross-platform compatibility improvements that drive business value and developer productivity.

March 2025: Focused on rendering fidelity in ledger-secure-sdk. Delivered Transparent RAM-buffer Text Rendering and Character Composition to support overlapping glyphs without visual artifacts, enabling better rendering of complex scripts in memory. Implemented in LedgerHQ/ledger-secure-sdk with commit 5d3c6d770dbc1f34d41f8c9dfabd7e8bfdeafda7. No major bugs fixed this month. This work enhances UI clarity in constrained memory environments and lays groundwork for advanced text features, demonstrating strong low-level rendering and memory-management skills.