CODEWITHSUNDEEP
androidadbcyanogenmodusb-debugging
codymanix
codymanix

Reputation: 29468

ADB says device unauthorized

I tried installing cyanogenmod on my samsung s2. I managed to sucessfully install cyanogen recovery on the device which boots up when I start the device.

After that I tried to install cyanogenmod which gets me an error:

adb push "cm-12.1-20160129-NIGHTLY-i9100.zip" /storage/sdcard0
error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.

I already tried to kill and restart adb server and also tried installing different usb drivers using Zadig.

I have read that USB debugging must be enabled on the device but the problem is that I cannot boot android anymore to set that option, I only get a start screen with a yellow exclamation mark and right after that cyanogenmod recovery menu shows up. Iam not sure if this option is the source of the problem, though.

Is the device bricked now or is there a way to either install cyanogenmod or at least restore the original android?

Upvotes: 2

Views: 4674

Answers (3)

paulo breim
paulo breim

Reputation: 31

The solution for me that work well is

1 - adb kill-server

2 - sudo adb usb

after this you mobile will ask for authorization and work well. so, adb needs root privilege.

Upvotes: -2

Martin Koltonowski
Martin Koltonowski

Reputation: 89

You can use the sideload function:

  1. Open you CyanogenMod Recovery
  2. Apply update -> Apply from ADB
  3. Your terminal should now show your device as sideloaded
  4. type: adb sideload cm-12.1-20160129-NIGHTLY-i9100.zip done

Upvotes: 8

codymanix
codymanix

Reputation: 29468

I now simply solved the problem by copying the cyanogenmod zip on the sdcard of another phone, then put this sdcard in my phone and then simply installing from sdcard via cyanogenmod recovery menu.

Upvotes: 1

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