Galeno Fernandes

Hi, thanks.

Hello everyone, I’m trying to flash a firmware on a generic Android TV Box and I’m stuck at a hardware/bootloader compatibility issue. Device technical details: - SoC: Allwinner H618 - Board / PCB: FX-H618-D4_V10 - RAM: 4GB DDR4 - Storage: eMMC (unknown size, likely 32GB) - USB FEL ID: VID_1F3A PID_EFE8 - Original OS: BigdroidOS (Android generic) - Commercial name: Transpeed 8K618-T Current situation: - Device enters FEL mode correctly (VID_1F3A PID_EFE8) - PhoenixSuit detects the device but firmware upgrade hangs at “Beginning Firmware Upgrade” - Tried multiple PCs (Windows 10 and 11), different USB ports and cables - Allwinner FEL driver installed correctly - SD card flashing with PhoenixCard (Startup mode) is ignored, device boots normally to Android - Reset timing variations tested (short press / long press / no reset) Tested firmware: - sbx_transpeed_h618_atv_12_11.img - H618.apollo-p3.T-H618_100M_12_FD650.2023.09.13.1720.img Both firmwares show similar behavior (FEL detected but no successful flash). I believe the issue is bootloader / DDR4 initialization mismatch. I’m specifically looking for: - A firmware confirmed to work with board FX-H618-D4_V10 - Or the original BigdroidOS firmware dump for this board - Or confirmation whether this board requires a specific boot0/boot1 Any help, working firmware, or dump from the same board would be greatly appreciated. Thank you! Allwinner H618, FX-H618, DDR4, PhoenixSuit, FEL, Transpeed