If you haven’t read the earlier parts, please do so. The background There is a long standing tradition among hardware hackers and tinkerers. Once a platform is hacked, once a gadget is tinkered with, once a device is understood there will always be someone who asks a certain, specific question. And that question is: “Can it run Doom?” Doom (1993) Doom (1993) is a first person shooter made by id Software which was originally made for MS-DOS.

If you haven’t read the earlier parts, please do so. The Same Car as Before Two summers ago I bought a 2021 Hyundai Ioniq SEL. It is a nice fuel-efficient hybrid with a decent amount of features like wireless Android Auto/Apple CarPlay, wireless phone charging, heated seats, & a sunroof. One thing I particularly liked about this vehicle was the In-Vehicle Infotainment (IVI) system. As I mentioned before it had wireless Android Auto which seemed to be uncommon in this price range, and it had pretty nice, smooth animations in its menus which told me the CPU/GPU in it wasn’t completely underpowered, or at least the software it was running wasn’t super bloated.

If you haven’t read the earlier parts, please do so: Part 1, Part 2, Part 3. Why Some time after hacking my head unit I came up with an idea. I wanted to create an application which added more features to the standard key fob. By this I mean by entering a certain code of locks, unlocks, or other button presses on the fob, would do something else in the vehicle like start the engine.

Notice Note: As of 2022/10/25 the information in this series is slightly outdated. See Part 5 for more up to date information. I take no responsibility for any damages due to the information or steps provided on this site. The content is for educational purposes only. You modify your own car’s firmware at your own risk. None of this process is approved by Hyundai, Kia, or Hyundai Mobis. Background If you want to see how I got this far, check out the rest of my “How I Hacked my Car” series.

Note: As of 2022/10/25 the information in this series is slightly outdated. Hyundai released DAudio2 134.100.220927 which fixes the found security issues. This latest update contains two update files. One that uses the old, flawed keys and one that uses the new keys. This guide should technically still work using the update file that uses the old keys, but I have not verified it personally. This latest update also removes the header files which makes development for this platform more difficult.

Note: As of 2022/10/25 the information in this series is slightly outdated. See Part 5 for more up to date information. If you haven’t read Part 1 please do so. No More Waiting On April 28, 2022 a new round of Display Audio firmware updates was released for Hyundai and Kia vehicles. Luckily, it included my car. I wasted no time in developing my own firmware update with a backdoor.

Note: As of 2022/10/25 the information in this series is slightly outdated. See Part 5 for more up to date information. The Car Last summer I bought a 2021 Hyundai Ioniq SEL. It is a nice fuel-efficient hybrid with a decent amount of features like wireless Android Auto/Apple CarPlay, wireless phone charging, heated seats, & a sunroof. One thing I particularly liked about this vehicle was the In-Vehicle Infotainment (IVI) system.