i have downloaded iOS 15.0 fireware.
i followed the steps. when i run dsc_extractor , the result is as bellows:
dyld_shared_cache_extract_dylibs_progress() => 0
it seems to be not found any symbol files.
information of my mac
os version: 11.0.1
xcode: Xcode 12.5.1 Build version 12E507