Sp Flash Tool V5.1352 ((better)) Here

Keep v5.1352 in your toolkit alongside a newer version like v5.2128. When one fails, the other often succeeds. And always, always back up your NVRAM before you flash.

The phone is not entering preloader mode. Fix: Disconnect battery, wait 10 seconds, reconnect, then connect USB. Or try pressing Volume Up/Volume Down + connect. sp flash tool v5.1352