For the Kirin 710, which typically utilizes UFS storage, professional technicians consider hardware boxes (like UFI Box or EasyJTAG Plus) the "best" solution for dead phones. However, this requires disassembling the phone and soldering, which is beyond software-only solutions.
devices due to their frequent updates and support for "Software Testpoint" (which avoids the need to open the phone). Smart-Clip2 / Sigma Software hisilicon kirin 710 flash tool best