I recently try to reset my android phone by power off, power on and volume up button.

There're several option but once I push volume down once and volume up once, it stuck with alarm sign and android logo. Below the logo said

Now send the package you want to apply to the device with adb sideload <filename>.zip...'

What should I do to fix this?

  • 2
    "but once I push volume down once and volume up once" -- I think you did volume down once and then, the power button. – Spikatrix Sep 19 '15 at 9:57
  • 1
    Background: From the description, you've entered "ADB sideload" mode. Entering a menu is done by pushing the menu button. – Izzy Sep 19 '15 at 10:01

if you can't take out the battery of your device and if longpressing whatever does not solve it

  1. install adb on pc.
  2. connect device with usb cable to pc
  3. enter following command on pc

    adb sideload /dev/null

the device will complain that file is not valid but it will come out of the sideloading state

  • My ADB complains that ADB is not authorized. Now what? – user253751 Jan 27 at 2:36

Long press Power & volumn UP button for 10 second should solve it.

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