Worked on the flipperdevices/u-boot repository to address a regulator mode mismatch issue within the power management subsystem, focusing on improving reliability during boot and runtime transitions. The solution involved applying the current regulator mode during enable operations and restructuring the function call sequence to ensure mode settings were established before enabling the regulator. This approach reduced the risk of misconfiguration and mode drift, aligning the saved regulator mode with the hardware state. The work required expertise in C programming, embedded systems, and device driver development, and contributed to more stable power state transitions by refining the regulator enablement process in embedded environments.