If you have a Huawei P30 Pro, Mate 40 Pro, or Nova 7 SE that is hard-bricked, IDT version 9 will fail. Version 20 is the minimum requirement.
If your device can still boot to Android or eRecovery, avoid IDT—stick to HiSuite or dload method (with a microSD card).
While IDT is for deep system repair, other tools serve different needs: