Vita firmware versions was released by SKGleba. Wii U The most common way to execute code on the Wii U for 5.5.5 and below is through vulnerabilities in the Wii U's built in web browser. There are many different userland and PowerPC kernel exploits in the Wii U internet browser. The earliest userland exploits used C code (on versions 2.0.0-5.3.2) and libstagefright bugs (on versions 5.4.0-5.5.1) to load custom code in the browser, with memory and permission limitations. The first kernel exploit found in the browser, called osdriver, only works on system versions 5.3.2 and lower, but this is no longer used as the 5.5.1 and lower exploit is more reliable. Currently, two different browser kernel exploits are used in the community. The first exploit found works on 5.5.1 and below and is very reliable. The other kernel exploit works on 5.5.2 and below, but due to its unreliability, it is only used on 5.5.2 to install a Wii U software exploit called Haxchi. When installed to a DS VC game, Haxchi launches homebrew directly (such as the Wii U Homebrew Launcher) using an exploit installed in the game's file location. There is also an additional, optional, part of Haxchi called "Coldboot Haxchi" or CBHC. CBHC allows custom firmware to be enabled automatically each time the system is turned on by running the Virtual Console game directly on boot, whereas other exploits have to be run every time manually. However, CBHC has an increased risk of rendering the system inoperable as deleting the Virtual Console game, among other things, will brick the console, rendering it unusable. Recently, an alternative to CBHC has been released called Tiramisu. Many homebrew applications that run via the Homebrew Launcher have been collected and hosted on wiiubru.com. These hosted applications can be downloaded directly on the Wii U using The Homebrew App Store app in the repository. The Wii U's built-in emulated Wii environment (often nicknamed vWii or Wii Mode) is capable of running Wii homebrew, such as The Homebrew Channel. However, vWii is much more fragile than a real Wii console and has a higher chance of being rendered inoperable if dangerous software is used. Also, due to changes made to the Wii operating system in vWii mode, previous exploits that utilized the Wii Menu itself to load the HackMii Installer, such as Letterbomb, do not work on vWii. The only ways to hack