This Harman Kardon® software upgrade will improve the performance of your AVR 260 by updating its internal operating system, DSP (digital signal processing) firmware and video-processing software. Unlike many consumer products, which are designed with "fixed" memory, these Harman Kardon products feature flash memory that is upgradeable through a standard RS-232 serial port.
This software update includes the following updates for your AVR. Even if you have not encountered any of these issues, we recommend that you install the new software to take advantage of additional minor performance improvements:
Harman Kardon has specially designed this software for use with Harman Kardon AVR 260 receivers. Use with any other models or brands may cause damage to the product. DO NOT USE THIS SOFTWARE WITH ANY OTHER PRODUCTS.
To install the software upgrade, you will need to purchase a standard RS-232 connection cable. Do not use a "null modem" cable, as it uses connection links that are not compatible with your AVR. If your computer is not equipped with a serial port, you may use one of the USB-to-serial-port adapters listed below that have been tested for interoperability with the AVRs.
Upgrading your receiver is easy; but for the upgrade to work properly, it is important to follow the instructions below precisely. The upgrade will take about
45 minutes. Once it begins, you must complete the entire process in one session. Please allow sufficient time to run through all the steps. PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE PROCEEDING.
Once the upgrade starts, do not interrupt it by turning your AVR off or exiting the upgrade program on your computer. Doing so may cause the upgrade to fail and possibly damage your receiver.
To check if the upgrade was successful, turn on your AVR and press 1-2-3-0-OK on the remote control to display the version number in the front-panel display. If it reads as shown below, your unit is now loaded with the proper software. If a different number appears, please repeat the upgrade process.
CONGRATULATIONS! With the completion of the upgrade process, your Harman Kardon AVR is now not only as good as new - it will perform even better than it did when you first bought it. We wish you many years of happy listening!