It looks like you’re referring to a cracked version of the (possibly from a forum post with ID 3653917).
Using unofficial or modified service tools can permanently "brick" (render unusable) the mobile device you are attempting to service. Obsolescence: SonyEricsson USB Smart SEMC tool v8.4 Cracked -3653917-
But the SEMC Tool didn't care about 'standard.' It was a skeleton key. It looks like you’re referring to a cracked
Today, the SonyEricsson USB Smart SEMC Tool v8.4 is completely obsolete for practical modern communication. Sony Ericsson as a brand transition into Sony Mobile, and feature phone architectures have been entirely replaced by modern Android and iOS environments secured by advanced cryptographic bootloaders. SonyEricsson USB Smart SEMC tool v8.4 Cracked -3653917-