Spice mi 402 SC7715 pattern lock done by format without risk

Press and hold the vol+ button while connect to usb
>>Boot downloaded.
18:37:24 > Start boot please wait a moment….
18:37:26 > Spreadtrum Boot Block version 1.1
>>Boot downloaded.
18:37:27 > CPU TYPE:SC7715[7715A000]
>>Boot downloaded.
18:37:27 > Flash ID: 009800BC9066
18:37:27 > Flash Type:[TOSHIBA] TYBC0A111236KC10
18:37:27 > FLASH LEN:0x20000000
18:37:27 >
18:37:27 > The phone is setting back to Factory…
18:37:35 > >>Formatting completed.