If you truly need iFile-like functionality on iOS 9.3.5, follow this exact workflow.
If you strictly want iFile for nostalgia or specific legacy script compatibility, follow these steps to install the IPA file. Step 1: Download a Verified iFile IPA ifile ipa ios 935 work
Realizing the risks he'd taken, Alex sought help from the same forums and communities he had initially learned from. Through advice and guides, he managed to use iFile IPA (ironically) to navigate and correct the system files he had previously altered, eventually resolving the issue. If you truly need iFile-like functionality on iOS 9