Linksys Cable / DSL :: WAG120N Firmware 1.0.0.16 Bugged

I just upgraded my WAG200G for WAG120N (I'm brazillian and its the latest model here). The modem/router came with 1.0.0.7 or 8 firmware - i actually don't remind - and I upgraded to 1.0.0.16, which is the latest made by Linksys/Cisco. At this point I started testing the modem/router and I started getting problems. The range isn't as good as the older WAG200G. In my house I have 3 laptops, an AzBox Premium+ and an Xbox 360 S (the slim version which has wifi built-in) to connect to the WAG120N by WIFI. The 2 desktops are wired connected.Everything seemed to be working perfect for I was just testing the 2 wired computers first. The second task I had to do was configure the Xbox 360 wifi connection. The Xbox is less than 6 meters from the WAG120N and the signal just. But thats OK, at least the console recognizes the network and I would soon be playing again - what I thought. But I was wrong. Despite the console recognizes the network, it was just impossible to connect. I spend 2 days to figure out why all Laptops could connect to WAG120N and the Xbox 360 couldn't. 

 Xbox 360 detect but don't connect. I expected that somewhere I would find the answer but I couldn't. Luckily I had a click on my mind when I was at a Microsoft website looking the list of routers that supports the Xbox 360S. That list had 2 parameters, the modem name and firmware version. Yeah, "WAG120N / 1.0.0.11". It was really hard to believe that all around the world people have the same problem I was having and the solution was something so.  but for the Linksys developers who destroyed the modem with bad firmware programming.Then I started to search where I would find the WAG120N 1.0.0.11 firmware just to give my idea a try. Unfortunately, there wasn't any website from which I was able to download that firmware. But I found the 1.0.0.12 firmware somewhere and make the firmware downgrade. Yeah, my Xbox 360 S could, after 2 days, finally be connected to the wireless network and I was able to play online and achieve gamerscore points again.

Even though I was able to play, the Xbox had a problem when connecting to the Xbox Live. Hopefully, this time, the Xbox 360 could tell me what was wrong. The console displaied a message saying my NAT was Moderated and I should configure my router and change the Moderated to Open, something like that. The problem is that the WAG120N doesn't have any options beyond Enable or Disable the NAT thing ( which particularly I didn't searched what it is yet). It means that I will have an unstable connection when playing. I have configured my Xbox to manually connect and I opened all the doors people said would enhance the Live connection and nothing worked.The other problem was the signal range. I don't know if it can be caused for the bugged firmware, didn't tried to see if the 1.0.0.16 firmware has some improvements over this, but the signal range just . I don't know how much newer this WAG120N is when compared to the WAG200G, but it can't be possible this newer modem has low signal range.  I mean, my home is just a standard apartment. Signal should be at least normal every place.I don't know if the developer team fix firmwares based on what we say here on forum or it I'll have to email them, but if I could ask something for the new 1.0.0.17 firmware is that you, for the love of god, may this firmware Xbox 360 compatible, as the later versions was. Ah, just to remind, its not just an Xbox 360 problem, another member of this forum said this same problem appeared not just in his Xbox 360, but his laptop too.