May void any remaining warranty (unlikely for such an old model). Incorrect use can corrupt the printer’s permanent serial number or USB PID/VID, making driver installation impossible. 2. Manual Firmware Downgrade (to pre-HP version) If the printer was updated to a firmware version that blocks compatible toners, a downgrade can restore functionality.
The following discounts apply to all these products.
May void any remaining warranty (unlikely for such an old model). Incorrect use can corrupt the printer’s permanent serial number or USB PID/VID, making driver installation impossible. 2. Manual Firmware Downgrade (to pre-HP version) If the printer was updated to a firmware version that blocks compatible toners, a downgrade can restore functionality.
