There is no "exclusive" or secret firmware version for the HP LJ 1320; however, ensuring you have the final official release is critical for stability on modern operating systems: Official Downloads
During the exclusive update, the Toner LED will flash in a rapid pattern (3 quick, 1 long). Do not interrupt power. The entire process takes 4–6 minutes. hp lj 1320 firmware update exclusive
Firmware updates for older LaserJet models often address critical areas: There is no "exclusive" or secret firmware version
| Model | Latest Firmware | Date | Exclusive Fix | | :--- | :--- | :--- | :--- | | HP LJ 1320 | 20080812 | Aug 2008 | USB polling rate fix | | HP LJ 1320n | 20080910_3 | Sep 2008 | JetDirect IPv6 compatibility | | HP LJ 1320tn | 20080910_3 | Sep 2008 | Tray 2 paper size memory | Firmware updates for older LaserJet models often address
If you are troubleshooting and wish to ensure your system is up to date, follow these standard HP procedures:
After the printer restarts and reaches the Ready state, perform a final validation.