Worked on the google/bumble repository to address a Bluetooth compliance issue by fixing the handling of L2CAP signaling packet identifiers. Using Python and embedded systems expertise, implemented a targeted bug fix that ensures generated signaling identifiers are never zero, aligning with the Bluetooth Core Specification. This change improves connection stability and interoperability across different host stacks by preventing invalid identifier values. The solution was designed with minimal code changes to reduce risk and accelerate deployment, focusing on reliability without introducing new features. The work demonstrates a careful approach to protocol compliance and embedded Bluetooth stack maintenance within a production codebase.