Samsung I9001 Galaxy S Plus hard reset quit RAMDUMP mode1. Phone turned off. Plug in USB cable first.
2. PRESS AND HOLD VOLUME UP + POWER Buttons (or step 2 press VOL UP and DOWN + POWER )
3. When you see Samsung LOGO release buttons, then press MENU button (lower LEFT) when you see android figure.
If that not working
(Press these 2 buttons VOL UP and HOME + press Power button for 2-3 Seconds)
Use this method to hard reset your Samsung I9001 Galaxy S Plus Android phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
Menu > Settings > Privacy > Factory Data Reset > Reset phone > Erase everything.
Samsung I9001 Galaxy S Plus download mode1. DO NOT Plug in USB cable.
2. PRESS AND HOLD VOLUME DOWN + Home + POWER Buttons (or VOL DOWN + POWER)
(Keep pressing these 2 buttons VOL DOWN and HOME + press Power button for 2-3 Seconds)
Release only power button, but KEEP pressing Volume down + Home Buttons. When you see Downloading PLUG IN USB cable.