I removed Cc temporary because I had sent them the same email once. No need to send the email to them again. > On 10/01/2023 19:30 krzysztof.kozlowski@xxxxxxxxxx wrote: > You install this kernel with DTB on some device so clearly you have such > device > in hand, right? It has then some manufacturer, some company. If it is USB > stick > as you said, then it has even vendor ID, which might be or might not be > real. The vendor extracted from `/system/build.prop` and USB vendor ID is fake, even IMEI is stolen from some other mobile phones. Seems like the vendor deliberately tries to be anonymous. Some people had tried to extract info from stock firmware and on the Internet. But until now, we have no clear evidence to know the manufacturer. Best regards, Yang