Power cycle the printer. If it boots back to a normal ready state, try sending the update using a different USB port or a shorter USB cable. Fatal Error Code (Solid Red/Orange Lights) Cause: The firmware chip failed to rewrite.

Ensure the printer is turned on and the Ready light is green.

Resolve "Printer Not Found" errors on Windows 10/11 and macOS. Enhanced Print Stability: Minimize mid-job freezes and "engine communication" errors. Font & Symbol Support:

As years passed, HP officially discontinued direct firmware downloads for the 1320. This turned the latest firmware into a rare "exclusive" found only in dusty corners of the internet or specialized HP Printer Utility tools.

Connect your printer via USB and ensure it is in a "Ready" state.

: There is no "exclusive" or new firmware update for the HP LJ 1320 in 2026. The printer's firmware is static, and most units already run the final version released by HP.