I have a 2 deg Galaxy S5 G900F. Couple nights ago it did another update that took around an hour. Since then screen rotation wont work and when you press home button it wont go home but open random apps. I have tried wiping cache and factory reset to no avail. Have looked on internet and only rom downloads I can find they either want money or 12 plus hours to download. Also don't know if they really are genuine. I cant find any on Samsung official site. Even now if I turn phone then restart it stays on black screen with Samsung in white and blue LED for around 10 minutes before it will restart. Tried all I can on internet to no avail