technical details got through abd:
Device
• Model: Fire-Boltt FB222
• RAM: 4 GB
• Internal storage: 64 GB
• Current OS: Android 9 / HAMI OS 9.1
• Android API: 28
• Kernel: 4.4.147
• Security patch: 2020-03-05
SoC / Hardware
• Board platform: sp9832e
• SoC: UNISOC / Spreadtrum SC9832E — platform identifier “sp9832e”
• CPU ABI: arm64-v8a
• Hardware / board name: WWO_C16_OLED_PIX64
• Baseband previously visible: SC9832E_modem
Treble / Partition information
• “ro.treble.enabled = true” 
• “ro.boot.verifiedbootstate = green”
• “ro.bootloader = unknown”
• “ro.boot.slot_suffix” = empty → appears to be A-only/non-A-B
• Storage uses eMMC-style “/dev/block/mmcblk0”
• Important partitions found:
- boot
- dtb
- dtbo
- system
- vendor
- product
- vbmeta
- recovery
- userdata
- uboot / uboot_bak
- trustos / trustos_bak
- modem-related partitions: l_modem, wcnmodem
- GPS partitions: gpsbd, gpsgl
- NV partitions: prodnv, l_fixnv1, l_fixnv2, l_runtimenv1, l_runtimenv2, l_deltanv
ADB
• USB debugging works
• Original 4-pin magnetic charging cable is also working for data/ADB
• “adb devices” successfully detects:
“20241008222016626 device”
Important: I have NOT flashed/unlocked/modified anything yet. Only read-only ADB commands were used.
What we want to find
Can anyone identify this exact hardware/firmware or a compatible custom ROM/GSI?
The main question is whether this can run a Treble GSI newer than Android 9, preferably Android 11/12/13, while retaining watch-specific hardware functionality.