Apple TV 4K dyld_shared_cache extraction #674
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tvOS OTA files do not contain a Does anyone know of a way to extract these files from Apple TV's 4K OTA files? Based on this comment, I understand there is no way to generate an ipsw from an OTA file, so that route is not an option. @blacktop if you have any ideas here, would be super helpful. In an ideal world, something like |
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Answered by
blacktop
Apr 7, 2025
Replies: 9 comments 3 replies
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give latest go run ./cmd/ipsw/main.go ota ls "18.4_AppleTV14,1_AppleTV14,1-wifi_OTA_c9a5136bbdd77d3dc3b6c7c6e5123103a8683ce84299ba5727948a346f5e5dcb.aea" | grep -i dyld
-rw-r--r-- 2025-03-27T02:36:29-06:00 33 kB AssetData/payloadv2/ecc_data/System/DriverKit/System/Library/dyld/dyld_shared_cache_arm64e
-rw-r--r-- 2025-03-27T02:36:29-06:00 5.3 kB AssetData/payloadv2/ecc_data/System/DriverKit/System/Library/dyld/dyld_shared_cache_arm64e.symbols
-rw-r--r-- 2025-03-27T02:36:30-06:00 728 B AssetData/payloadv2/ecc_data/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e
-rw-r--r-- 2025-03-27T02:36:30-06:00 237 kB AssetData/payloadv2/ecc_data/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.01
-rw-r--r-- 2025-03-27T02:36:31-06:00 236 kB AssetData/payloadv2/ecc_data/System/Library/Caches/com.apple.dyld/dyld_shared_cache_arm64e.03
<SNIP>❱ go run ./cmd/ipsw/main.go ota extract "18.4_AppleTV14,1_AppleTV14,1-wifi_OTA_c9a5136bbdd77d3dc3b6c7c6e5123103a8683ce84299ba5727948a346f5e5dcb.aea" --dyld |
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1 reply
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Using this link, which I believe is the same OTA file as yours, I get the following output on the latest In contrast, for this link, I get the following output: I guess two things I wonder about are:
Really curious to hear your thoughts on this and any possible solutions down the road 🙏 . For now I think the only way to extract the symbols from an Apple TV 4K is from the physical device itself 🤯 |
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hmm looks like it needs more attention; as it produces a mixture of normal files and BXDIFF50s (man appleTV's OTA format is gross) |
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1 reply
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i think i had a partial OTA so maybe full OTAs will work now |
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As a workaround, I managed to get the Apple TV 4K symbols for all three gens from the physical devices, but it would be nice to be able to extract the |
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the OTA in my example was a 'delta' OTA meaning it doesn't include all the required info (and requires a previous OTA to 'patch' against) if you grab a 'full' OTA |
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Awesome, thanks for that! Is there a flag to force the tool to automatically look in the Referring to |
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it should automatically search the payload files if it can't find the cryptexes |
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make sure you are using the latest version of |
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Yep, got the latest version running. You sure? The |
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1 reply
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ipsw ota extract --dyld --confirm OTA |
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Answer selected by
nemzutkovic
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Lifesaver @blacktop, thanks chief 👑 . Let's close this off! |
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ipsw ota extract --dyld --confirm OTA
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