Check out how to easily wipe cache partition in ZOPO ZP1000. This operation won't affect your personal files it will only remove temporary cache files. As a result you can refresh Android 4.3 Jelly Bean system and optimize MediaTek MT6592.
Wait until the Zopo logo appears on the screen, then release both buttons.
You should be in the Recovery Mode now. Use the Volume Up and Volume Down buttons to move through the menu.