Previous versions of the Ultimate Multi Tool faced challenges with newer security protocols, specifically MediaTek’s enhanced DA (Download Agent) authentication and SLA/DAA (Secure Layer Authentication / Device Auto Authentication). Version 5.1 introduces:

Ultimate Multi Tool-mtk V5.1 [hot] Jun 2026

Previous versions of the Ultimate Multi Tool faced challenges with newer security protocols, specifically MediaTek’s enhanced DA (Download Agent) authentication and SLA/DAA (Secure Layer Authentication / Device Auto Authentication). Version 5.1 introduces: