Unhappy [Q] Please help! My phone seems to be absolutely brickedT-T

My phone is ZTE U807.
It cannot boot or enter the recovery.
My computer can find the "MTK USB Port (COM8)".
I have tried to use SPMultiPortFlashDownloadProject but it says

Error: S_DA_DRAM_NOT_SIPPORT(3004).

And SP_Flash_Tool_v3.1222.00, it says

BROM ERROR: S_DL_GET_DRAM_SETTING_FAIL (5054)
[EMI] Obtain DRAM Failed!
.

I have been looking for solutions for a long time. If someone can help me, I will be very appreciate.