Selected model: E2121B
Selected com port: COM39
Selected speed port: 921600
Please, connect phone and press power button 3 seconds
Phone Detected
Sending loader1... OK
Flash ID: 16
Set speed - Fail
Send loaders - fail
Elapsed time: 20 second, sw ver: 3.5.0028

nó báo này là sao mà ko chạy được hept