On 11/01/2023 09:32, krzysztof.kozlowski@xxxxxxxxxx wrote: > This does not solve my concerns. If you cannot point specific manufacturer > and > model (if there is no manufacturer, there can be no official model, > right?), how > anyone can be sure that their device is compatible with yours? 1. the best way is to take the device apart and compare the board design with others; 2. the label on board, though format unknown, seems to be different between different models and identical for one model; 3. read board-id from stock Android firmware. It's not reliable because a board-id might be shared by multiple models. Note this board-id has no other usage because the manufacturer reused a board-id defined by qcom. We extract some special fields from the label(i.e. ufi001c or uf896) to be the model name for a device, currently it's enough to distinguish between different boards. For example, the label on ufi001c is 'UFI001C_MB_V01', we extract the first field to be the model name.