Unbricking AC58U

when i used for the serial connection to the router then show those messenger
how can i debricking my router

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.3.1.1-00110
S - IMAGE_VARIANT_STRING=DAABANAZA
S - OEM_IMAGE_VERSION_STRING=CRM
S - Boot Config, 0x00000021
S - Reset status Config, 0x00000000
S - Core 0 Frequency, 0 MHz
B - 261 - PBL, Start
B - 1339 - bootable_media_detect_entry, Start
B - 1679 - bootable_media_detect_success, Start
B - 1693 - elf_loader_entry, Start
B - 5069 - auth_hash_seg_entry, Start
B - 7212 - auth_hash_seg_exit, Start
B - 578516 - elf_segs_hash_verify_entry, Start
B - 694848 - PBL, End
B - 694872 - SBL1, Start
B - 785154 - pm_device_init, Start
D - 7 - pm_device_init, Delta
B - 786682 - boot_flash_init, Start
D - 54217 - boot_flash_init, Delta
B - 845041 - boot_config_data_table_init, Start
D - 3836 - boot_config_data_table_init, Delta - (419 Bytes)
B - 852254 - clock_init, Start

That’s the PBL and the SBL, not the higher-level loader, such as U-Boot. Does it continue?

If not, the boot loader is probably bad, making software recovery challenging.

What precipitated the brick?