Rk3328 Firmware Android 11 Link [updated] -

If the above links no longer work, try these alternative sources:

Upgrading an RK3328 box to Android 11 requires patience and a backup plan. To improve your chances of success, first verify your hardware (RAM, storage, Wi-Fi chip), then download the firmware and recommended tools, and finally follow the flashing steps carefully. rk3328 firmware android 11 link

Try a different USB port on your PC (preferably a USB 2.0 port on the back of the motherboard). Ensure you are plugging into the correct OTG port on the TV box. Reinstall the Rockchip drivers. If the above links no longer work, try