ADB always offline

Question

My environment:

ADB version : 1.0.26

SDK platform tools : 20

I had rooted my HTC INSPIRE 4G with JellyTime ROM (Android 4.2.2). I tried connecting via USB as well as TCP.

But I am not able to detect the device via adb Console.

What may be the reason for this and how can we solve the problem?

Answer 1

It's sound like a Driver issue, Try to download the good one and uptade the previous one, You may have to disable Windows update auto install drivers function.

Don't forget to enable the Debug USB function on your device.

EDIT :

I got the same issue because adb wasn't running in root mode, try to install adbd insecure which grants you root adb access : http://forum.xda-developers.com/showthread.php?t=1687590

Answer 2

If your drivers are OK you must update your SDK Tools and SDK Platform-Tools.

Then use adb kill-server and adb devices, "offline" should be gone.

If it doesn't work you can edit your android_winusb.inf adding these lines. (Read this answer before do it ;) )

; HTC Inspire

%SingleAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CA2

%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0CA2&MI_01

Go to device manager and update your driver using this file.

Then use adb kill-server and adb devices.

Answer 3

Turn debug on phone: Settings - Developer options - USB debugging = ON