macUSB v2.1 brings a new built-in macOS Downloader, improved helper reliability with automatic post-update repair, and a polished USB creation experience.
NEW: DOWNLOADER
- Added a downloader module available from Tools → Download macOS installer... and from the analysis screen via Download.
- Added Apple-catalog installer discovery with grouped system families and an option to show all available versions.
- Added a complete staged workflow: connection, file download, verification, installer build, and final cleanup.
- Added installer verification based on package signature checks and data-integrity validation, applied according to system version and available verification methods.
- Added support for preparing installers across modern and legacy Apple distribution paths, including Sierra and older official Apple Support downloads.
- Added a completion summary with transfer metrics, destination details, and direct Show in Finder action.
- Added one-click handoff from downloader summary to analysis, allowing immediate use of the downloaded installer in USB creation.
IMPROVEMENTS
- Helper repair is now more reliable and repeatable, especially in cases where macOS temporarily blocks or delays background activation, with more stable recovery after reconnection attempts.
- Helper repair is now presented as a system alert, improving UI consistency and making recovery status easier to follow.
- After updating to a new app version, helper auto-repair now runs automatically to ensure compatibility with newly introduced functionality.
- Added sleep prevention while downloading macOS and while creating a USB installer.
- Minor UI polish during the USB creation stage.