I have a method for unlocking the bootLoader of my HP SlateBook x2 running Android v4.3 consisting of:

  1. Booting into recovery.
  2. Connecting to PC via USB cable.
  3. Sending the command fastboot -i 0x03F0 oem unlock to the Android device.

But this device has an incredible problem: it sells without USB cable (LOL), so I have no USB cable at all.

But I have installed TWRP recovery, that includes a root command-line shell. So, as long as I can not connect via ADB bridge by using USB cable nor ADB via Wireless (the recovery mode does not detect the Wi-Fi card), I was wondering if it would be possible to use this shell to send the fastboot command from recovery mode in the stand-alone device (without any connection to PC, as long as it is not possible).

Any ideas, please?

  • I've edited your question to not mention ADB, since fastboot is not an ADB command and doesn't use ADB.
    – Dan Hulme
    Aug 10, 2014 at 8:03

3 Answers 3


Fastboot commands are for the bootloader, not recovery, so even if you send the commands from recovery, it would do no good since you would be in recovery, not the bootloader.

According to all the information I could find about this "tablet," including information from HP, indicates that there is no way to access fastboot since there is no USB port and HP doesn't make a dock-port to USB cable for the tablet. Edit: apparently HP does have a cable for it, but it may be difficult to find and isn't cheap.

  • Here ( forum.xda-developers.com/… ) is the method of rooting the SlateBook by using the Micro-USB dedicated cable (HP spare part number 728141-001, sold separately). It involves the use of several fastboot commands. Aug 10, 2014 at 10:42
  • @SopalajodeArrierez that is what you need then. There is no way to access fastboot except from another PC.
    – abqnm
    Aug 10, 2014 at 12:56
  • Well, thanks for your opinion. I suggest for you to correct your post, since there is some USB cable (expensive, but it exists) for this tablet and there is a way to access fastboot for this tablet. Aug 10, 2014 at 13:45
  • @SopalajodeArrierez thanks. It is funny that HP doesn't even list this cable anywhere in their support docs. I am glad there is a way, but it is a very poor design by HP.
    – abqnm
    Aug 10, 2014 at 13:48

I know I'm late with this answer, but for the future readers, you can unlock your bootloader on-the-fly with an app. Assuming you have root access and a standard unlockable bootloader (fastboot oem unlock), you can use Trickster MOD. You can see its XDA thread for more info.

Look under the "Tool" sub-menu and toggle "Bootloader Lock State". If you're even still keeping up with this post, how do you have TWRP with a locked bootloader?


No, there's no way to send a fastboot command from the device itself. When the device is in fastboot mode, it's a very dumb device and can't even give you a shell or turn on the Wi-Fi. The fastboot program is the only way to send it the command to unlock the bootloader.

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