Firmware for the Ricoh SP 112 laser printer, packed as a 633 KB RAR with no version, region or chip marking in the name. It is mainly used to recover a printer stuck in an error state or with damaged firmware, by writing the image directly to the main board memory. Inspect the archive contents and confirm the target chip before programming. Read and save the existing contents first, because printer dumps often hold counters and settings specific to the unit.
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 @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →