usb - Adb says "Error: Device offline" everytime

Please see this question for background information.

Problem:

Whenever I run adb devices it says Error: device offline - This appears even when no device is connected at all. It won't even let me start the adb server. Therefore solutions like "run adb kill-server first" won't have any affect.

Things to note:

• This is adb on another android device. I can not "re-install the android SDK platform" or something like that. It took me a long while to find the ARM binary for adb that works.


• From googling around, I suspect it might be that the adb binary is outdated, however it seemed to work recently for other people on XDA-devs. If anyone can provide me with a newer version of adb as a binary that will run on an ARM platform (android), I'd be happy to try it out.


• Yes, I do run adb as superuser (root). Other commands (like adb --help work).

The tablet runs android 4. The phone runs android 7 but that shouldn't matter since even without anything connected I can't even start the adb server on the tablet.

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Edit: Using the adb binary from here solved the error, but presents me with this now:

# adb devices
List of devices attached

* daemon not running. starting it now at tcp:5038 *
* daemon started successfully *
** daemon still not running
error: cannot connect to daemon at tcp:5038: Success