imagemounter: fetch DDI from GitHub and improve mount reliability#720
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May 10, 2026
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- Switch iOS 17+ DDI source from deviceboxhq.com to github.com/doronz88/DeveloperDiskImage (build 17E5179g), resolving identity-not-found failures on newer chips (A19 Pro)
- Add QueryPersonalizationManifest fast path: try existing device-side manifest before requesting Apple TSS, and reconnect the service on failure since the socket is closed by the device. This skips nonce + TSS on re-mounts when the manifest is still valid
- Replace hardcoded Manifest struct with dynamic map entries and iterate all Trusted entries when building the TSS request
- Update TSS @versioninfo and add @uuid field
- Add ProductBuildVersion-based DDI cache validation and stream DMG/trustcache directly to disk during download
Switch iOS 17+ DDI source from deviceboxhq.com to github.com/doronz88/DeveloperDiskImage (build 17E5179g), resolving identity-not-found failures on newer chips (A19 Pro). Add QueryPersonalizationManifest fast path: try existing device-side manifest before requesting Apple TSS, and reconnect the service on failure since the socket is closed by the device. This skips nonce + TSS on re-mounts when the manifest is still valid, based on pymobiledevice3's PersonalizedImageMounter.mount(). Replace hardcoded Manifest struct with dynamic map entries and iterate all Trusted entries when building the TSS request. Update TSS @versioninfo and add @uuid field, matching pymobiledevice3's TSSRequest construction. Also add ProductBuildVersion-based DDI cache validation and stream DMG/trustcache directly to disk during download.
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Use the deviceboxhq CDN (owned, fast, global) for the iOS 17+ personalized DDI rather than raw.githubusercontent.com. Bump the hosted image to build ddi-17E5179g (the newer universal DDI that also fixes A19 Pro). The versioned filename keeps the local cache deterministic, so the GitHub-specific cache revalidation is no longer needed. All of the mount-reliability improvements are kept: dynamic BuildManifest map, QueryPersonalizationManifest fast path with reconnect, and the updated TSS request (VersionInfo/UUID) for newer chips. Co-Authored-By: Daniel Paulus <daniel@checklyhq.com> Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
# Conflicts: # ios/imagemounter/imagedownloader.go
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Awesome stuff! I would rather keep the DDI on deviceboxhq.com because it has a fast global CDN, so I made a few changes. Thanks a ton for this improvement! |
Co-Authored-By: Daniel Paulus <daniel@checklyhq.com> Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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