Recovery router without access web inteface and terminal/bash

I have a router / modem without web access and terminal does anyone know how to recover? I checked on the board has the points RX, TX, DLOAD, RESET_N, so I saw here only have SMD components so the only way to rewrite the firmware would be for these communication points. Note: I tried access via serial but stops at bootloader.

SERIAL LOG:
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset),  D - Delta,  S - Statistic
S - QC_IMAGE_VERSION_STRING=BOOT.BF.3.1.2-00075
S - IMAGE_VARIANT_STRING=LAATANAZA
S - OEM_IMAGE_VERSION_STRING=ubuntu
S - Boot Config, 0x000002e0
B -      1216 - PBL, Start
B -      3723 - bootable_media_detect_entry, Start
B -      4454 - bootable_media_detect_success, Start
B -      4458 - elf_loader_entry, Start
B -      6701 - auth_hash_seg_entry, Start
B -      6923 - auth_hash_seg_exit, Start
B -     59917 - elf_segs_hash_verify_entry, Start
B -    107892 - PBL, End
B -     97478 - SBL1, Start
B -    146003 - pm_device_init, Start
B -    163114 - PM_SET_VAL:Skip
D -     15890 - pm_device_init, Delta
B -    164120 - boot_config_data_table_init, Start
D -    174948 - boot_config_data_table_init, Delta - (420 Bytes)
B -    342576 - CDT version:3,Platform ID:8,Major ID:1,Minor ID:0,Subtype:0
B -    348767 - sbl1_ddr_set_params, Start
B -    352580 - Pre_DDR_clock_init, Start
D -       244 - Pre_DDR_clock_init, Delta
D -         0 - sbl1_ddr_set_params, Delta
B -    365237 - pm_driver_init, Start
D -      4544 - pm_driver_init, Delta
B -    371642 - cpr_init, Start
D -        91 - cpr_init, Delta
B -    376156 - cpr_cx_mx_apc_vol_update, Start
D -        91 - cpr_cx_mx_apc_vol_update, Delta
B -    391071 - sbl1_qhsusb_al_do_fast_enum, Start
D -         0 - sbl1_qhsusb_al_do_fast_enum, Delta
B -    394060 - clock_init, Start
D -       152 - clock_init, Delta
B -    399855 - boot_flash_init, Start
D -     28670 - boot_flash_init, Delta
B -    500230 - Image Load, Start
D -     78172 - QSEE Image Loaded, Delta - (490820 Bytes)
B -    580049 - sbl1_efs_handle_cookies, Start
D -         0 - sbl1_efs_handle_cookies, Delta
B -    585661 - Devcfg Partition does not exist
B -    589839 - Image Load, Start
D -       518 - SEC Image Loaded, Delta - (2048 Bytes)
B -    597800 - Image Load, Start
D -     31994 - RPM Image Loaded, Delta - (152400 Bytes)
B -    629825 - Image Load, Start
D -     58804 - APPSBL Image Loaded, Delta - (367664 Bytes)
B -    688690 - QSEE Execution, Start
D -       152 - QSEE Execution, Delta
B -    694393 - SBL1, End
D -    599203 - SBL1, Delta
S - Throughput, 3000 KB/s  (1013352 Bytes,  321860 us)
S - DDR Frequency, 240 MHz
Android Bootloader - UART_DM Initialized!!!
[0] welcome to lk

probably here: https://www.osmocom.org/projects/quectel-modems/wiki