We are developing an iOS application using Firebase Messaging. Everything runs smoothly when launching the application from Xcode to a dev iPhone (we can get an FCM token and receive push notifications from server). Unfortunately, we get an AMFI warning when installing the signed application from Testflight :

AMFI: constraint violation /private/var/containers/Bundle/Application/[...]/App.app/Frameworks/FirebaseCore.framework/FirebaseCore has entitlements but is not a main binary

The application does not crash, but Firebase library is not working. When trying to get an FCM token, we get the following exception

11.9.0 - [FirebaseMessaging][I-FCM023014] Error while reading embedded mobileprovision Error Domain=NSCocoaErrorDomain Code=260 "The file “embedded.mobileprovision” couldn’t be opened because there is no such file." UserInfo={NSFilePath=/private/var/containers/Bundle/Application/[...]/App.app/embedded.mobileprovision, NSURL=file:///private/var/containers/Bundle/Application/[...]/App.app/embedded.mobileprovision, NSUnderlyingError=0x3007cde00 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}

I went to XCode > Organizer and inspected the Archive with the following commands, I'm not expert but everything seems correctly configured :

codesign -d --entitlements - /Users/ME/Library/Developer/Xcode/Archives/2025-03-19/App\ 19-03-2025,\ 16.05.xcarchive/Products/Applications/App.app

returns :

[Dict]
    [Key] application-identifier
    [Value]
        [String] CORRECT-APP-ID
    [Key] aps-environment
    [Value]
        [String] production
    [Key] beta-reports-active
    [Value]
        [Bool] true
    [Key] com.apple.developer.team-identifier
    [Value]
        [String] CORRECT-TEAM-ID
    [Key] get-task-allow
    [Value]
        [Bool] false

And

security cms -D -i /Users/ME/Library/Developer/Xcode/Archives/2025-03-19/App\ 19-03-2025,\ 16.05.xcarchive/Products/Applications/App.app/embedded.mobileprovision

returns

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" ".0.dtd">
<plist version="1.0">
<dict>
    <key>AppIDName</key>
    <string>MASQUED</string>
    <key>ApplicationIdentifierPrefix</key>
    <array>
    <string>MASQUED</string>
    </array>
    <key>CreationDate</key>
    <date>MASQUED</date>
    <key>Platform</key>
    <array>
        <string>iOS</string>
        <string>xrOS</string>
        <string>visionOS</string>
    </array>
    <key>IsXcodeManaged</key>
    <false/>
    <key>DeveloperCertificates</key>
    <array>
        <data>MASQUED</data>
    </array>

    <key>DER-Encoded-Profile</key>
    <data>MASQUED</data>

            <key>PPQCheck</key>
    <false/>

    <key>Entitlements</key>
    <dict>
        <key>beta-reports-active</key>
        <true/>

                <key>aps-environment</key>
        <string>production</string>

                <key>application-identifier</key>
        <string>MASQUED</string>

                <key>keychain-access-groups</key>
        <array>
                <string>TEAMDID.*</string>
                <string>com.apple.token</string>
        </array>

                <key>get-task-allow</key>
        <false/>

                <key>com.apple.developer.team-identifier</key>
        <string>TEAMID</string>

    </dict>
    <key>ExpirationDate</key>
    <date>2026-02-24T13:12:15Z</date>
    <key>Name</key>
    <string>My Provisioning profile</string>
    <key>TeamIdentifier</key>
    <array>
        <string>TEAM-ID</string>
    </array>
    <key>TeamName</key>
    <string>TEAM-NAME</string>
    <key>TimeToLive</key>
    <integer>364</integer>
    <key>UUID</key>
    <string>MASQUED</string>
    <key>Version</key>
    <integer>1</integer>
</dict>
</plist>

Can anyone help ? We've been struggling with this and do not see what we are doing wrong.

We've followed religiously this guide : and think our configuration is valid.