Month 2025-10 — Zephyr RTOS: Boot and recovery enhancements delivered for ARM SoCs and Nordic NRF54H20DK. Implemented the ARM SoC Early Reset Hook Framework enabling pre-stack RAM init logic (CONFIG_SOC_EARLY_RESET_HOOK), wired in reset assembly, and updated Kconfig docs. Added MCUboot serial recovery support for NRF54H20DK by introducing device-tree aliases mcuboot-button0 and mcuboot-led0, with overlay cleanup. Documentation updates accompany both feature areas to improve clarity and maintainability. While no major bugs were fixed this month, these changes strengthen boot resilience, recovery options, and maintainability across the platform.

Monthly summary for 2025-08 focusing on zephyrproject-rtos/mcuboot. This month delivered two critical contributions in the MCUboot repository, emphasizing business value through build-time optimizations and repair of update paths. Key features delivered, major bugs fixed, overall impact, and technologies demonstrated are detailed below.

Concise monthly summary for 2025-07 focusing on key accomplishments in the zephyrproject-rtos/zephyr-testing repository. The highlighted work centers on power-management readiness and precise memory layout to support robust suspend/resume paths across ARM Cortex-M and Nordic NRF53/54 platforms.

June 2025: Delivered a targeted bootloader configuration cleanup in zephyrproject-rtos/mcuboot. Removed obsolete CONFIG_BOOT_MGMT_CUSTOM_IMG_LIST, and updated CMakeLists.txt, configuration headers, and documentation to reflect the removal. This reduces unused configurations, mitigates potential build issues, and improves maintainability for future feature work. The change supports cleaner bootloader configuration and smoother onboarding for contributors, aligning with project cleanup goals.

May 2025 monthly summary for zephyrproject-rtos/mcuboot: Delivered critical fixes and workflow improvements that enhance boot reliability and build correctness across LTO configurations and CMSIS-6 integration.

Month: 2024-12 — zephyrproject-rtos/mcuboot: Delivered a targeted performance optimization for NRF54 RRAM write operations by enabling a larger write buffer (CONFIG_NRF_RRAM_WRITE_BUFFER_SIZE = 32) across multiple NRF54 boards. This change stabilizes and speeds up bulk RRAM writes, improving boot-time and firmware update performance on NRF54-based devices. Scope covered board configurations: nrf54l15dk_nrf54l05_cpuapp, nrf54l15dk_nrf54l10_cpuapp, and nrf54l15dk_nrf54l15_cpuapp. Commit: 3a33d4faceb86abb2229d4dd09486514df4fac43. No major bugs fixed this month for mcuboot in this repo; effort focused on performance optimization and configuration reliability.