Zjbox Firmware [new] -

Ensure the drive is 32GB or smaller and strictly formatted to FAT32. Some boxes fail to read USB 3.0 drives; try using an older USB 2.0 drive if the issue persists. "Invalid File" or "Upgrade Failed" Error

The Android TV community has produced custom builds (e.g., from FreakTab or 4PDA). These offer: zjbox firmware