For "bricked" devices or deep system overhauls, you may need the or Rockchip Batch Tool . This requires connecting your box to a PC via a Male-to-Male USB cable. Essential Precautions
Clear out system bloat and optimize RAM management.
Used when the device won't boot or if you are performing a clean install. Download the firmware .zip file. Copy it to a FAT32 formatted SD card.
for unbranded boxes sold through their storefront. How to Install EntertainmentBox Firmware