The 4.6.0 version of TunesKit iOS System Recovery for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this Mac application is TunesKit. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
No matter your iPhone stuck in recovery mode or white Apple logo, or loop on starting, TunesKit iOS System Recovery for Mac is the best solution to get your device back to normal in just minutes. It's able to fix all iOS system problems, including black screen, frozen screen, boot loop screen, and much more without causing any data loss.
You may want to check out more Mac applications, such as iMyfone iOS System Recovery, FonePaw iOS System Recovery or iMyfone iOS System Recovery for Mac, which might be similar to TunesKit iOS System Recovery for Mac.
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Debugging Tools