3utools Installation Package Validation Failed

If you are on a corporate network or using a firewall like TinyWall, 3uTools cannot reach timestamp.digicert.com .

: Go to the Toolbox tab in 3uTools, select IPA Signature , and sign the file with your Apple ID before attempting the installation again. 3utools installation package validation failed

Enter your Apple ID and click "Start" to push the app to your device. This often bypasses the "validation failed" loops found in 3uTools. 3. Verify Your Apple ID & Certificate If you are on a corporate network or