A: Your bootloader resolution is wrong. You need to edit the parameter.txt file before flashing to force 1280x720 as the kernel display buffer.
Before starting, ensure you have the following hardware and software tools: : A Windows PC and a USB Male-to-Male Rk3229 Android 9.0 Firmware
| Problem | Solution | |--------|----------| | Device not detected | Reinstall drivers, try USB 2.0 port, check cable | | Download boot fail | Bad firmware – try another version | | Test device fail | Replace USB cable or use shorter cable | | Stuck at boot logo | Enter recovery (toothpick method) → wipe data/factory reset | | Black screen after flash | TV resolution issue – press remote's 1080p button or boot without HDMI | A: Your bootloader resolution is wrong
| Component | Path | Customization notes | |-----------|------|----------------------| | Kernel | kernel/ | Backport 4.19 (or use 4.4.194) with RK3229 dts | | U-Boot | u-boot/ | Enable Android A/B slot if needed | | Device tree | device/rockchip/rk3229/ | Define partitions, peripherals | | Vendor | vendor/rockchip/rk3229/ | Proprietary libs (GPU, VPU, RGA) | | Frameworks | frameworks/base/ | IR keylayout, HDMI CEC, display scaling | try USB 2.0 port
