How I deal with my router problem

I have a Asus RT-N16 wireless router and was pretty ok with it's performance UNTIL recently.  I found that the connection with WiFi becomes crappy, and have similar problem on wired connection too (like when I use my XBox 360).  So I finally decided to do something.  I checked the Asus firmware site and found that the latest version for my router is 3.0.0.3.108 while my version was 1.0.1.9.  It pretty obvious that I should do a firmware upgrade now.  So I followed the instruction, but failed for a few time until I realized that I need to expand the unzip file to "RT-N16_3.0.0.3_108.trx".  Done that, uploaded, and the firmware update was completed after a while.

Then I need to update the SSID of the router from default to 192.168.2.x subnet, and also need to set the passcode for my WiFi setting back to the old one.  In fact, the moment it boots up, I didn't know it, and couldn't access it using my MacMini.  Instead I found that the default UUID "Asus" showed up on my iPad 2, and I used it to setup the router.

I still don't know if it will really solve my router problem.  But at least it's a start.