Re: 4540 Mfp - Disk dead. New disk installed - erase and unlock/lock to device not available.

1.Go to www.hp.com/go/cljcm4540mfp_firmware and follow the onscreen steps to download the most recent firmware upgrade files for your product.
2. Copy the firmware update file to a portable USB flash memory storage device (thumb drive).
3. Reinstall the formatter with the new hard drive and reconnect the power cord and network connection.
4. Turn the product on.
5. Press and hold the Stop button when all of the LEDs illuminate solid.
6. Press the 9 button to highlight the Administrator menu, and then press the 6 button.
7. Press the 9 button to highlight the Download menu, and then press the 6 button.
8. Insert the portable USB storage device with the firmware update file on it.
NOTE: If the error message No USB Thumbdrive Files Found appears on the control-panel display, you might need to connect the storage device to the external USB connection on theformatter.
9. Press the 9 button to highlight the USB Thumbdrive menu, and then press the 6 button.
10. Press the 9 button to highlight the firmware update file, and then press the 6 button.
NOTE: The upgrade process can take up to 10 minutes to complete. TIP: If there is more than one firmware update file on the storage device, make sure that you
select the correct file for this product.
11. When the message Complete appears on the control-panel display, press the 5 button three times.
12. When the message Continue appears on the control-panel display, press the 6 button. The product will initialize.
13. When the upgrade process is complete, print a configuration page and verify that the upgrade firmware version was installed.