altstoreio / altstoreio/AltStore

Altsign error when trying to sideload specific ipa

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Dominant language
Swift
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Description

Whenever I try to sideload this specific ipa I get
AltSign.Error 0
ldid.cpp(1461): _assert(): end >= size - 0x10

I tried a method someone sent me where you need to use feather to fix it or something but whenever I recompress the payload folder with the new .app file and try to sideload it I just get the same error

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Research direction

The report identifies ldid.cpp:1461, the IPA payload folder, and the recompressed .app as the relevant path. Start by reproducing the assertion with the specific IPA and comparing the original and recompressed payload; no test or target source file is named, so completion requires isolating the packaging or signing cause and confirming the IPA sideloads successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
ios
Domain
mobile-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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