For more community tips, you can check discussions on Facebook regarding common installation troubleshooting. How to Associate IPA Files on iPhone Using 3uTools?
For apps signed with a personal Apple ID, you must manually trust the certificate on your device before the app will open: Open on your iPhone/iPad. how to install ipa file with 3utools
Your iOS device and a functional USB lightning or USB-C cable. The .ipa file you wish to install saved on your computer. For more community tips, you can check discussions
Works for 99% of IPAs. Cons: Slow (restoring a backup takes time). Requires an Apple ID. For more community tips