Sometimes the bootloader is trying to write to a protected boot sector (0x43). Use your tool’s advanced menu to manually map the flash range from 0x800000 to 0x810000 instead of the full range. This often bypasses the lock.
If you just need a generic for a DLC boot #43 from 2023, here’s a sample: dlc boot 2023 43
He felt a surge of hope as the desktop appeared. He quickly opened the Disk Tools Sometimes the bootloader is trying to write to