The Asus Eee Pad Transformer TF201 or Asus Eee Pad Transformer Prime is a 2-in-1 detachable tablet from the Asus Transformer Pad series. It is the world's first Android tablet computer with a quad-core processor, and a successor to the dual-core Asus Eee Pad Transformer. It runs Android 4.1. The Transformer Prime was announced by Asus on 9 November 2011. It was released in Taiwan on 1 December 2011, and in Canada and the United States during the week of 19 December 2011. Features The Eee Pad Transformer Prime is a tablet computer with a 10.1" IPS+ multi-touch screen with a resolution of 1280x800 and an Nvidia system-on-a-chip (SoC). It has an 802.11b/g/n Wi-Fi module and a microSD card reader. The optional docking keyboard features full QWERTY keys, touchpad, one USB 2.0 port and one Secure Digital (SD) card reader as well as an additional battery that increases overall battery life from 12 to 18 hours. There is also a sleeve which protects the tablet when not in use. This has similarities with the , but folds in an origami like fashion. Software The Transformer Prime shipped with Android 3.2 Honeycomb. Android 4.0.3 Ice Cream Sandwich update was released on 11 January 2012 for the Transformer Prime. It was then updated to Android 4.1.2 Jelly Bean on 27 September 2012. Reception The tablet has been noted for its graphics performance in games optimized for the , with the water in Riptide GP prompting a description of "awesome". By contrast, file transfer speeds for writing were one of the slowest in tablets tested. A review unit was rooted in December 2011. Users of the device intending to install a custom ROM themselves were disappointed in January 2012 to discover a locked and encrypted bootloader. The manufacturer promptly announced work on a tool to unlock the bootloader, the use of which will void the warranty and preclude use of DRM content purchased via services such as Google Videos. In a comparison with the original Transformer by the Android Police blog, the Prime was preferred. Two "minor" downsides were quoted: the speakers and the loss of a USB port. Hasbro lawsuit On 22 December 2011, toy maker Hasbro filed a lawsuit against Asus for trademark violation. Hasbro requested that Asus change the name of the Prime, claiming that the name "Transformer Prime" is using its Transformers franchise to sell tablets. Failing the name