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Exploit to root webOS TVs using DejaVuln and set up Homebrew Channel

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throwaway96/dejavuln-autoroot

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dejavuln-autoroot

This is a tool to root LG TVs and automatically install Homebrew Channel. It uses DejaVuln, which works on webOS 3.5 and newer. This exploit will not work on TVs from 2016 or earlier. 2024 models have been patched from the start, and recent firmware for most webOS 5+ TVs is also patched.

Note

Use CanI.RootMy.TV to determine whether your firmware is vulnerable.

Patch status

Warning

Many models are patched. Do not update your firmware if you want to be able to root your TV.

Even if you are running patched firmware, avoid updating it if you want to be able to root your TV in the future.

The latest firmware for most webOS 5+ OTAIDs is patched.

I expect almost all webOS 4.5+ OTAIDs to be patched. However, webOS 3.5 will almost certainly never receive patched firmware, and 4.0 probably won't either.

All release versions of webOS 9 ("webOS 24") are patched. This means 2024 models and older TVs that have been upgraded to webOS 9 are not currently rootable. (But they will be, at some point...)

If you want to donate any TV boards for development, please contact me on the OpenLGTV Discord.

Instructions

  1. Download the latest release (not the files named "Source code") from the Releases page.
  2. Extract the archive to the root directory of a USB drive. (It should be formatted with FAT32 or NTFS and only have one partition.)
  3. Plug the USB drive into your TV. (Make sure it's the only USB drive connected.)
  4. Open the USB drive in the Music (or Media Player) app and browse to lol$(sh$IFS$(find$IFS/tmp.
  5. Try to play the MP3 file (usb$IFS-maxdepth${IFS}3$IFS-name${IFS}autoroot.sh)).mp3). You should expect to see an error message about being unable to play the MP3 whether or not the exploit works.
  6. After the pop-up messages tell you rooting is complete, eject the USB drive.

If you have the LG Developer Mode app installed, you must remove it before rebooting. Do not install it while your TV is rooted.

Settings

You can influence the behavior of the script by creating certain files in the root directory of the USB drive:

  • autoroot.debug - Enables additional logging.
  • autoroot.telnet - Makes a root shell available via telnet on port 23 when the script starts.

Troubleshooting

If the script fails, you must delete autoroot.once from the USB drive and/or reboot the TV before it will run again.

A log file named autoroot.log should be created on the USB drive.

On webOS 8 (webOS 23), you may have to try multiple times; it seems that restarting appinstalld does not reliably make it detect the existence of devmode_enabled. May also apply to webOS 7.

Toasts from the script may be hidden by system messages (like the one about the MP3 file not being recognized).

If the toast and/or log says "Rooting complete" but you don't see Homebrew Channel, reboot the TV. Make sure Quick Start+ is disabled.

Make sure the archive is extracted such that autoroot.sh is in the root directory of the USB drive.

Support

You can find more information at webosbrew.org.

If you need help rooting your TV, try the OpenLGTV Discord. Before you ask a question, check the FAQ (#faq) to see if it is answered there! Attach your autoroot.log when asking for help.

Credits

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.

See COPYING for details.

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Exploit to root webOS TVs using DejaVuln and set up Homebrew Channel

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