Using aml_flash_tool and gpt inspection, the typical layout for this firmware is:
| Partition | Size | Filesystem | Purpose | |-----------|----------|------------|----------------------------------| | bootloader| 4 MiB | raw | U-Boot with secure boot keys | | reserved | 16 MiB | raw | Device tree, mac, serial | | cache | 128 MiB | ext4 | Temporary data | | env | 8 MiB | raw | U-Boot env variables | | logo | 16 MiB | raw | Boot logo | | recovery | absent | – | None SOS → no recovery kernel| | boot | 32 MiB | raw | Kernel + initramfs | | system | 1.2 GiB | ext4/squash| Read-only system image | | data | 2.3 GiB | ext4/f2fs | User data |
None SOS means there is no separate recovery partition; recovery mode must be served by the boot partition’s initramfs or a network/tftp fallback. allupgrade aml920 4g 512m none sos exclusive
The aml_upgrade_package.cfg inside the firmware reveals:
[common] erase_bootloader = 0 erase_flash = 1 reboot = 1[partition] name=bootloader size=0x400000 file=u-boot.bin.sig name=boot size=0x2000000 file=boot.PARTITION name=system size=0x50000000 file=system.img name=data size=0x94000000 name=cache size=0x8000000 Using aml_flash_tool and gpt inspection, the typical layout
[sos] enable = 0 # None SOS confirmed
Key observations:
Because this is an "Exclusive" SKU, standard distribution channels may not list it publicly. Key observations: Because this is an "Exclusive" SKU,
The core of this device is the Amlogic AML920. This is a high-performance SoC (System on Chip) based on the ARM architecture. Typically, the AML920 series is designed for set-top boxes, digital signage, and industrial HMI (Human-Machine Interface) devices. It balances power efficiency (usually under 5W TDP) with enough computational grunt (often featuring quad-core Cortex-A53 or similar) to handle 4K video decode and basic edge computing.