I have a galaxy a5 and I flashed a twrp rom and Its stuck in recovery is not seadroid enforcing, and unfortunately the volume dow isn't working, do you know of any way to get into odin mode?
Just to clarify as it's not apparent just how you're attempting to get into Download mode (a.k.a. Odin mode), the default buttons to get into different modes for your S5
Recovery mode -- power up your phone while simultaneously holding down the Volume Up, the Home, and the Power buttons
Download mode -- power up your phone while simultaneously holding down the Volume Down, the Home, and the Power buttons.
That said, if your Volume Down button isn't working try pulling the battery out for several minutes and then try to boot up into Download mode again. (... in the event this is just a one-off hardware glitch -- leaving the battery out long enough should allow any residual power to drain out that might be retained by internal components like a capacitor). If the Volume switch has been a problem previously though, this might indicate other issues. Maybe try picking up a can of aerosol contact cleaner, readily available at any computer retail store like Fry's, MicroCenter, Best Buy, etc. If there's some kind of build-up or just too much pocket lint on the actual metal contacts inside the Volume switch itself, the contact cleaner solvent might be able to clean it up. (... don't use in an enclosed space or around a baby, there's a toxic stew of chemicals in the solvent).