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I got this message from Apple

An app signed with a codesign version provided on an older macOS, like Catalina (10.15) will not run on iOS 15 because the latest version you can install is Xcode 12.4. Xcode 12.5 seems to change the behavior of codesigning. When installing you get the error message The code signature version is no longer supported. Is there a workaround?

They also suggested following Using the Latest Code Signature Format documentation for making the app compatible with the new signature format.

One of the steps was to see Page Size by running this command.

% codesign -dv /path/to/MyApp.app

They said that the output will have Page size.

Page size=4096
 -7=f4c7c0ae394247097dca9b19333001200747691e1d9e25ec0cf0f35a8ade21f3
 -6=0000000000000000000000000000000000000000000000000000000000000000
 -5=7379374fd375633558fd972e33809c06e61f9f8191f67c71875899b0dc290945
 -4=0000000000000000000000000000000000000000000000000000000000000000
 -3=53cc3cc9830555e6d7bc864522fdf160b61ccc0d2fda9331368d333dfaa4fe24

But when I run the command I don't see the Page Size. Here is the output.

enter image description here

Rohit Singh
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1 Answers1

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To see the page size in xcode you need to use this:

codesign -dvvvvv MyApp.app

If it's not working try to Re-sign your app and try again this command.

maximus383
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    You are awesome! It works like a charm. Can you tell more about the -dvvvvv part in the command? Where did you find it and what does it mean? – Rohit Singh Oct 10 '21 at 23:27