Worked on the flipperdevices/flipperzero-firmware repository to enhance Sub-GHz transmission reliability and protocol rendering. Focused on embedded systems and firmware development using C, the work involved fixing a bug in the argument parsing logic for the Sub-GHz tx_from_file command, ensuring accurate handling of repeat transmissions. Additionally, refactored the NORALSY protocol’s data rendering by simplifying the function signature and removing redundant conditional logic, which improved both code maintainability and data display consistency. These targeted changes reduced maintenance complexity and increased confidence in protocol workflows, demonstrating a methodical approach to sustaining codebase quality within a specialized firmware environment.