Run the V4905 Tool:
Set USB Port:
Read EEPROM:
Reset Waste Ink Counter:
Clear Error (EEPROM Clear):
Exit Service Mode:
If you own a Canon inkjet printer, particularly from the PIXMA series (MG, MP, MX, IP), you have likely encountered the dreaded "Waste Ink Pad Full" or "Service Error 5B00" message. When this happens, your printer—which may be physically perfect—stops functioning. The official solution is to send it to a Canon service center for a pricey reset. The unofficial, widespread solution revolves around a piece of software known as the Canon Service Tool.
Among the most sought-after versions is Canon Service Tool V4905, often bundled with the keyword "download repack". This article explains exactly what this tool is, the risks and benefits of using a "repack," and whether it’s the right choice for you.
The service tool gives low-level access. One wrong click in the EEPROM editor (for example, writing incorrect values to the “ink absorption” or “board temperature” addresses) can brick your printer permanently. Service centers have backup protocols—you do not. canon service tool v4905 download repack
If you decide to proceed, here are red flags and green lights:
| Red Flags (Unsafe) | Green Flags (Safer) | |------------------------|--------------------------| | .exe size under 500KB (likely a dropper) | .exe size around 1.5MB – 2.8MB | | Requires disabling antivirus | Works without Admin rights override | | Promises "crack for all printers" | Limited to specific printer models | | Hosted on rapidgator, uploaded.net | Hosted on reputable tech forums with comments |
Note: No "repack" is ever fully safe. The safest method is to buy the legitimate tool from a trusted third-party reseller (not Canon, but a printer repair shop) for $10–20.
Several companies produce licensed reset utilities that are safe, tested, and often cheaper than service center fees. Examples include: Run the V4905 Tool:
These tools cost $5–$15, include virus-free guarantees, and offer customer support.
To understand the necessity of the Service Tool, one must first understand the mechanics of an inkjet printer. Canon printers utilize a waste ink absorption pad to catch excess ink during cleaning cycles. To prevent these pads from overflowing and ruining the printer’s internals, the printer’s firmware counts the number of cleaning cycles performed.
Eventually, this counter hits a pre-programmed limit, and the printer enters an error state—often displaying the dreaded "5B00" error or blinking orange and green lights alternately. The printer effectively says, "I am full; stop printing to prevent damage."
Officially, the solution is to take the printer to an authorized service center. Unofficially, this is often cost-prohibitive, sometimes exceeding the cost of a new printer. This is where the Service Tool v4905 enters the narrative. Set USB Port: