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.
The year 2023 marked a significant shift in diesel ECU security. Many manufacturers (Ford, GM, Stellantis) introduced SHE (Secure Hardware Extension) and HSM (Hardware Security Module) protocols that locked down boot mode access. Thus, "dlc boot 2023" refers to the tools and tricks developed specifically to bypass the 2023+ crypto-locks. dlc boot 2023 43
This is the core function of DLC Boot. If Windows is corrupted, you can boot into DLC and save your files before reinstalling. Sometimes the bootloader is trying to write to