I am working with a Radxa Rock 4B board running a clean AOSP 11 build and need its entire boot-up experience refashioned for a production device. My priorities are clear: • Replace the default boot animation with our company logo. I will supply the artwork in the required resolution; you convert it into the proper bootanimation.zip and integrate it into the system image. • Auto-launch our own custom-built APK the moment Android finishes booting, bypassing the standard launcher completely. • Lock down everything else: strip away system UI components, navigation bars, status bar pull-downs—anything that could let the user escape the app. Think of a tight kiosk mode that survives reboots and factory resets. You will have full AOSP source access plus the complete device tree for the Rock 4B, so changes can be done cleanly at the framework or init level rather than with fragile hacks. I simply need the resulting flashable image (img/raw or .xz) that I can deploy with BalenaEtcher and a concise README of the commits or build commands you used. Deliverables 1. Compiled Android 11 image with all three customisations baked in. 2. Bootanimation containing the company logo, proven working. 3. Patch set or Git diff showing source changes. 4. One-page flashing and verification guide. If you have shipped kiosk-style Android builds before, especially on Rockchip boards, you will feel at home here. Please outline any similar work when you respond and tell me roughly how long you need to turn around an initial test build.