Samsung recently unveiled its flagship device, the Galaxy S4, and hackers already got their hands on the latest firmware files. The firmware was leaked by one of SamMobile’s insiders. The new system dump is based on the Galaxy S4 test firmware, which is called I9500XXUAMCH. It looks like it was built on March 23rd and based off Android 4.2.2 JDQ39. The download will take quite a bit of time as the size is 1549.8MG. You can download the system dump here.