A 14.4 MB ZIP archive referencing board code d1811 and a stuck-on-logo fault; the name does not state the recorder model. D1811 is a code seen on some Dahua recorder boards, so this is likely a flash dump intended to fix a unit that hangs at the boot logo. Since the model is unknown, confirm the board code printed on your PCB, inspect the archive contents, back up the current flash with a programmer, and only write an image whose size matches the chip.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @laptopchiplevelrepair. Enginerys does not host this file.
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Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip