Question [Q] Any news on kindle 2013 KFSOWI unlocked bootloader?

Im using rooted stock rom of course with apex and adw launchers. Just wanting any updates on this model. I also am wondering if a fastboot cable is required or not cause this kindle does work with adb and if i could somehow just dd img or do something diff without a fastboot cable that would be great. I only have micro that connects adb. Thanks