Developed and released the initial version of CrDroid 12.8 for Redmi Note 11T, 11 5G, and 11S 5G devices within the crdroidandroid/android_vendor_crDroidOTA repository. Focused on Android development and device firmware engineering, the work involved applying device-specific changes and enhancements to support seamless over-the-air updates for these models. Leveraged skills in JSON and text-based configuration to establish a versioned release process, tying the baseline to a specific commit for traceability. The release included comprehensive documentation to streamline future updates, strengthening the OTA release engineering workflow and ensuring consistent support for targeted devices in the crDroid ecosystem.