Dump Epson [top]: Eeprom

The Ultimate Guide to EEPROM Dump for Epson Printers: Unlocking Service Modes, Resetting Waste Ink Counters, and Repairing Firmware

4. Dumping Process (Hardware)

Editing an Epson EEPROM Dump

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 | eeprom dump epson

How to reset the waste counter via hex editing:

  1. Open the .bin dump in HxD.
  2. Navigate to the offset documented for your model.
  3. Change the four bytes to 00 00 00 00.
  4. Recalculate the checksum if required (Epson often stores a CRC-16 at the end of the EEPROM; failing to update it will cause a Checksum Error on boot).

Caution: Editing without a model-specific map is dangerous. Always have a backup. The Ultimate Guide to EEPROM Dump for Epson

Method A: Software Dump (Limited Compatibility)

Epson does not provide official dump software, but third-party tools exist:

  1. WICReset (Warehouse Ink Circuit Reset): A paid Windows tool that can read basic EEPROM values via USB, but it cannot create a full binary dump on most modern models.
  2. Epson Adjustment Program (EAP): Leaked service software for models up to 2017. It can create a backup .bin file via the printer’s service port (USB or parallel). Look for files named *_EEP.BIN.
  3. Python Scripts (libusb): On Linux, you can use pyusb to send vendor-specific SCSI commands to compatible Epson printers. Command ESC/P codes like 0x1B 0x40 0x1B 0x52 can sometimes read EEPROM blocks.

Warning: Software methods are risky. A single wrong command can reset the EEPROM to factory defaults, erasing the Head ID and permanently disabling the printer. Open the

7. Common Use Cases

2. Tools Required

| Tool | Purpose | |------|---------| | CH341A programmer (or TL866, FT232H) | Reads/writes I²C or Microwire EEPROMs | | SOIC-8 test clip | Non-destructive connection to the EEPROM on PCB | | EEPROM reading software | AsProgrammer, NeoProgrammer, FlashROM (Linux) | | Soldering iron (optional) | If desoldering is necessary | | Logic analyzer (optional) | Protocol debugging |