After completion, the printer will reboot with the older, unlocked firmware. Your refilled cartridges should now work immediately without chip errors.
Based on forum posts from 2020–2025, the answer is:
– If this is a filename (e.g., .rar archive), be extremely cautious. Downloading unknown firmware from untrusted sources can brick your printer permanently.
button while powering on until "Wait Image" or "Press Stop to download" appears). : Connect the printer via USB and run a batch file (e.g., download.bat ) or drag the firmware file onto a usbprn2.exe Finalization
