It is not an official Google product but a third-party utility used by mobile repair shops, freelance technicians, and advanced hobbyists. The "v1.1" designation marks a significant improvement over earlier versions, with better bug fixes, expanded database compatibility, and faster bypass times.
However, for older devices—especially those running Android 9, 10, and 11— remains a gold standard. It’s lightweight, reliable, and requires no internet connection. frp king tool v1.1