160N Version 1 - Wireless Range Degrading Over Time

Hello,
I have owned a version 1.0 160N now for about 5 months and all was well with everything.  The range was better than any router I owned in the past until about three weeks ago when connectivity to my furthest outlying wireless adapters began to get worse.  It has been slowly degrading to the point that I cannot get a reliable connection unless the computer is within 30 foot clear line of sight.  Symptom is that PING to the router is not reliable and Web pages will not load even though the connection is made and maintained.  I was wondering if any others have experienced this degradation in range over time.  It is to the point now where I may ditch it and go get a 54G if I can find one.  Will a hard reset and configuration reload possibly solve the issue.  I also see that a firmware upgrade is available that is supposed to "improve wireless range" is available for the 1.0 version.  Has anyone done this upgrade with ill effects or a noticiable increase in range?  It is a total pain to have reconfigure all the MAC filtering and Port Forwarding but at this rate I will soon have a shiney, sleek, black doorstop.  Thanks for any insight you can provide.

Yes you can Upgrade the router's firmware as it would improve your wireless range...
Download Firmware 2.89MB...
Follow these steps to upgrade the firmware on the device: -
Open an Internet Explorer browser page.In the address bar type - 192.168.1.1
Leave the username blank & in password use admin in lower case...
Click on the 'Administration' tab- Then click on the 'Firmware Upgrade' sub tab- Here click on 'Browse' and browse the .bin firmware file and click on "Upgrade"...
Wait for few seconds until it shows that "Upgrade is successful"  After the firmware upgrade, click on "Reboot" and you will be returned back to the same page OR it will say "Page cannot be displayed".
Press and hold the reset button for 30 seconds...Release the reset button...Unplug the power cable from your router, wait for 30 seconds and re-connect the power cable...Now re-configure your router...

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