Over a two-month period, contributed modem support features to both the geerlingguy/linux and zephyrproject-rtos/zephyr repositories, focusing on embedded systems and driver development. In geerlingguy/linux, added Telit FN990B40 modem support by reusing existing FN920C04 configurations and introducing a new device information structure in C, enabling kernel driver and MHI host integration for expanded hardware compatibility. For zephyrproject-rtos/zephyr, delivered Telit LE910C1 modem support, updating both code and documentation in reStructuredText to broaden LTE modem compatibility and streamline customer onboarding. The work emphasized maintainable integration, hardware support, and clear documentation, with no major bug fixes during this period.