How To Put An Older iPhone Into Recovery Mode

First off, plug your phone into a Mac or a PC. This will allow us to use iTunes. Next, shut the phone off.

After you did that, you should turn the phone back on, but also hold down the home button as it is powering up. It should have some sort of iTunes logo or a laptop icon (depending on your phone/software). iTunes will detect it, and you can do a lot with it from there on!