Power reset or unknown upload mode

Hi, i have a problem with A750SN got stuck in bootloop. After i tried to enter download mode it shows me only “Power Reset or Unknown Upload Mode”, i have tried to connect it to Z3X and click on the “Reboot to Flash” the screen says OK but in the phone screen nothing is happening.

I will write the whole text that apears in the screen of device.

[RST_START = 0x1000000 ]

ECT : PARA002n

LPDDR4 manufacturer = Samsung

LPDDR4 Process ver = D18_B

LPDDR4 Size = 4G

LOT_ID = N0000

CHIP_ID = 0753b6b4924c

[TMU] 33, 29

asv_table_version : 2

big grp : 7

little grp : 7

g3d grp : 7

mif grp : 7

int grp : 7

fsys grp : 7

cp grp : 7

Please uncheck Auto Reset option of RDX!!

And do HARDRESET by using volume down + power key 7 secounds!!

CODE MATCHED (0)

Fatal exception in interrupt

PC is at hard_reset_hook_callback+0xdc/0x120

LR is at hard_reset_hook_callback+0xdc/0x120

I have tried the “ hardreset by using volume down + power key” but it still stuck in samsung logo.

If someone has any idea how to exit this and enter the download mode i would be very thenkfull.