Evad3rs developers team has released an update to their jailbreak tool Evasi0n to Evasi0n 1.5.3 that includes bug fixes for Windows users, whereas the previous version evasi0n 1.5.2 includes support for French, Chinese and German languages.
iOS 6.1.2 Update for iPhone, iPod Touch and iPad
How to Jailbreak iPhone 5, 4S, 4, 3GS over iOS 6.1.2 with Evasi0n
How to Jailbreak iPod Touch 5G, 4G over iOS 6.1.2 with Evasi0n
How to Jailbreak iPad Mini, iPad 4, iPad 3 over iOS 6.1.2 with Evasi0n