LinuxQuestions.org - 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.

Code:

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!!!

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