need help

i have DOOGEE KISSME DG580 phone

problem: black screen and touchscreen vibrate (need flash)

firmware needed DOOGEE-Ah-KISSME_DG580-Android4.4-V01-20150828 (android version 4.4.2)

i found firmware at net the same log just one diffrence in date but no chance (flashing done but phone not power no succes):

DOOGEE-Ah-KISSME_DG580-Android4.4-V01-20160627
[COLOR="Lime"]

log (miracle box):
Definition Applied
1. Power Off Phone , Remove Battery, Insert Battery Back
2. Insert USB cable. In some cases Required Hold BootKey
3. Use Miracle Boot Key In cases Boot key not Find
4. Battery Should be Charged more then 50%
Waiting for USB Port…
Set PreLoader USB VCOM Port (COM6)
Please Hold "ON" to connect with the phone…
Connected to Phone.
CPU: MT6582 SW:0001 Ver: CA01
Downloading Boot8 …
EMMC Size: 0x01D2000000
Flash Type: EMMC
INT/EXT RAM Size: 0x0+0x0
Reading infr(EMMC)…
id: DOOGEE-Ah-KISSME_DG580-Android4.4-V01-20150828
version:4.4.2
model:KISSME-DG580
brand: DOOGEE
manufacturer: DOOGEE
PRELOADER BaseAddr:0x0 Size:0xC00000
MBR BaseAddr:0xC00000 Size:0x80000
EBR1 BaseAddr:0xC80000 Size:0x80000
UBOOT BaseAddr:0x2920000 Size:0x60000
BOOTIMG BaseAddr:0x2980000 Size:0x1000000
RECOVERY BaseAddr:0x3980000 Size:0x1000000
SEC_RO BaseAddr:0x4980000 Size:0x600000
LOGO BaseAddr:0x5000000 Size:0x300000
EBR2 BaseAddr:0x5300000 Size:0x80000
ANDROID BaseAddr:0x5D80000 Size:0x38400000
CACHE BaseAddr:0x3E180000 Size:0x7E00000
USRDATA BaseAddr:0x45F80000 Size:0x82400000

>>Done.

question: i try all firmware in net but fail

tell me if i need to unlock bootloader of this mt6580 phone or just find same phone (same date 20150828 ) and do a backup or what i need to do

please help me