A raw dump is binary data, but certain offsets correspond to specific counters. Using a hex editor (like HxD), you can manually edit values.
Common offsets for Epson printers (Approximate):
| Function | Offset Address | Data Type | Example Value |
| :--- | :--- | :--- | :--- |
| Waste Ink Counter | 0x0D00 – 0x0D03 | 32-bit integer | 00 00 27 10 (10,000 pages) |
| Page Count (Color) | 0x0E00 – 0x0E03 | 32-bit integer | 00 00 00 FF |
| Serial Number | 0x1A00 – 0x1A20 | ASCII string | X9B123456 |
| Head ID | 0x1C00 – 0x1C0F | Hex bytes | Aligns with sticker on printhead |
How to reset the waste counter via hex editing: eeprom dump epson
Caution: Editing without a model-specific map is dangerous. Always have a backup.
Epson inserts a checksum at the end of the EEPROM (last 2 bytes). If you modify any data and do not update the checksum, the printer will reject the flash and show a fatal error (all LEDs blinking simultaneously).
| Error After Flash | Probable Cause | Solution | |-------------------|----------------|----------| | Printer turns on, but printhead crashes violently | Wrong motor timing values from a different dump | Revert to original dump. Only reset the specific byte for waste ink. | | “Printer model mismatch” on LCD | The EEPROM contains a model string (e.g., “L310” vs “L3100”) | Hex-edit the model string in the dump to match your sticker. | | No reaction – completely dead | You erased the bootloader zone (some Epson store bootloaders in EEPROM, but rare) | Desolder EEPROM, program it on a bench programmer with a known good dump. | | Ink levels show empty after reset | Some printers store ink levels in EEPROM. Reset also clears them. | Run a single “ink charge” from service mode. | A raw dump is binary data, but certain
Now you have a .bin file (e.g., epson_l805_dump.bin). Open it in HxD (free hex editor). This is where technical skill meets printer resurrection.
For the average user, the process is moderate to difficult.
Critical warning: Do not flash an EEPROM dump from a printer with a different mainboard revision. If you do, the printer may become an expensive paperweight. Always keep a backup of the original dump before writing anything. Caution: Editing without a model-specific map is dangerous
Scammers often do this to sell “low-page” printers. Locate the 4-byte integer for total pages printed. Change FF FF FF FF to zero. However, be aware that Epson’s service tool can detect checksum mismatches if you only reset the page counter without recalculating the EEPROM checksum.
Epson printers, like many other modern electronic devices, utilize EEPROM to store various critical data. This data can include: