If you attempt this, do not update the iOS version. If you accidentally update to 9.3.6 or 10.3.4, the iRemove tools will fail, and you will lose the ability to jailbreak permanently.
But if you are a casual user hoping to use it as a daily driver? Save your money. A bypassed iPhone 4S on iOS 9.3.5 is excellent for playing Angry Birds Classic and Spotify Lite —but it will never be a modern smartphone again. iremove tools ios 9.3.5
Furthermore, Even if you bypass the lock, the App Store barely functions. YouTube, Facebook, and modern banking apps will crash on launch. You are unlocking a museum piece. The Verdict iRemove Tools for iOS 9.3.5 are a technological miracle for preservationists. They keep the iPhone 4S and iPad 2 out of landfills. If you have a legitimate device you own (check the IMEI on a free checker first), a paid iRemove service is likely your only permanent solution. If you attempt this, do not update the iOS version