Really messed up G2 F320L, hard bricked pls help :(

[extremerogo]

Hello all,

I have got LG G2 F320L. From the begining: I have got no baseband in it.. I restored it with @grandixximo way, but still I can't call anyone.. So I managed to do one really bad thing... I flashed this:

I don't thought, this will brick my device. I entered TWRP, flashed this, and again flashed TWRP(I was sure, if this rom will not start, I will restore backup from TWRP. I flashed this and first, i tried to reboot to recovery, but there was Security error, and next was Critical error.. So I took out the baterry, and pluged it again and turned on the phone. The next and the worst error

is this:
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System Crash! : modem (subsys-restart: Resetting the SoC)
DemiGod Crash Handler : Subsystem Crash! :modem (subsys-restart: Resetting the SoC)
Press key to chose Dload Mode or Reboot.
1) Volume Up : Dload Mode
2) Volume Down: Reboot.
If you choose Dload Mode,
Please do following action.
1) Dload Mode. Please connect USB
2) Get the ram dump image using QPST Configuration
_________________________________________________
Board Info
rev. : 1.1 speed.pvs : 1,2 serial: xxxxxxxxxxxx(I'll not show the sn)
_________________________________________________
ERR crash log report. Version 3.

Error in the file rfc.wcdma.cpp, line 1017
Error message: Failed to map device! band=%d dev_type=%d insteance=%d
Time of crash (m-d-y h:m:s): 01-06-1980 0:00:00
Uptime (h:m:s): 0:00:00
Build ID: M8974A-AAAANAZM-1.0.190116
param: (0x0, 0x3, 0x0)
aux_msg:
qxdm_dbg_msg:

That's all. And I don't have Download Mode, there is only fastboot mode (I can't flash anything via this, just stopping at "flashing boot...". What can I do now? I don't want to give it to repair service... Please help guys it's very big problem(I think, I'm first guy on this world who totally messed up bootloader

)