Finding a legitimate academic paper specifically titled "iPad 2 iOS 9.3.5 iCloud Bypass Untethered" is difficult because specific consumer exploits are rarely the subject of formal academic literature until years later (usually when the vulnerability is patched and analyzed).
🔒 No Services: Bypassing the setup app means the iPad will generally not communicate properly with official Apple iCloud services. iMessage, FaceTime, and iCloud Sync will likely fail to work. Ipad 2 9.3.5 Icloud Bypass Untethered
from official or highly-vetted community sources to avoid malware. Cellular models: Bypass may disable cellular (no calls/data,
Do you still use an old iPad for something creative? Let me know in the comments below. from official or highly-vetted community sources to avoid
However, the "Untethered" aspect for the iPad 2 on iOS 9.3.5 is a fascinating case study in hardware security failures.
The Concept: These tools put the iPad into a specialized state called pwnDFU mode.
Even if you successfully achieve an untethered bypass on an iPad 2 running iOS 9.3.5, you will face severe usability hurdles: