, a firmware fix (often called "resoftare") is a popular way to bypass the restrictive toner chip. By applying a custom firmware reset, you can use refilled cartridges without needing a new chip every time, essentially turning your printer into a "chipless" machine. Prerequisites: What You’ll Need Before Starting
To create a custom firmware fix for your specific printer, you must first gather three unique identifiers from your device:
Drag and drop the .hd firmware file onto the usbprns2.exe application (often provided with the fix). , a firmware fix (often called "resoftare") is
Hold the button again for about 15 seconds until the LED stays solid green, then release. This report displays the CRUM series number. The Firmware Reset Process (Step-by-Step)
Hold the button for about 10 seconds until the LED flashes once, then release. This report contains the Serial Number and Firmware Version . Hold the button again for about 15 seconds
With the printer on, hold the Stop/Cancel button for 10–15 seconds until the LEDs flash, then restart the device.
The specific software version currently running on the printer (e.g., V3.00.01.05). This report contains the Serial Number and Firmware Version
The printer's LEDs will flash during the update. Do not turn off the printer or unplug the cable until it automatically reboots (usually takes 1–2 minutes).