Really bad wifi reception after upgrade to 10.6.7

Hey.
to make a long story short - after installing 10.6.0 on a MacBook2,1 (i think "mid-2007") everything's ok - but if i upgrade to 10.6.7 (either with built-in software-update or downloaded combo-update) the WiFi reception is really bad. in numbers -50dBm with 10.6.0 vs. -82dBm runnin 10.6.7 (everything on a clean system and exact the same location in the room) i tried it with two different networks both Linksys WRT54 routers running dd-wrt and openwrt.
i don't know what i can do -.-

I don't know for sure that it will help but it won't hurt to reset the SMC.
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery.
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.

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The solution given by Tenortim fixed my problem. Thank you Tenortim
https://discussions.apple.com/message/12924009#12924009
It is a little difficult. You have to be able to use Terminal to do step 3. Fortunately, my son was able to explain some of the details. The rest is straightforward.
I wish Apple would not include the new firmware without making sure it worked. I suppose if I upgrade to Lion, which I would like to do, I will have to go through the process again. For now I will stick with 10.6.8 and the Airport driver from 10.6.4, since that is working great.

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A Brody,
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iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting
http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet
http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
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http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

My iPad2(Wifi-16Gb) unable to connect to home wifi network after upgraded to iOS6. The said network is a remembered network and never face this connection issue before iOS6.

Forget and reconnect the netwrok doean't solve the problem.
Even Network Reset recommended in others iPad user in the forum can't help as well.
Please advice. Thanks.

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
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4. Go into your router security settings and change from WEP to WPA with AES.
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~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Weak Wifi signal after upgrading Iphone to 4.1

I had a perfectly working Wifi home connection on a new iPhone 4 running 4.01 and 4.02.
After upgrading to 4.1 yesterday, the wifi has gone bad: the connection strength has dropped - at least- 10 fold. I have to stand next to the router to get connected. Before I had excellent connection at long distances.
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Help!
S.

I am experiencing hte same thing. Except I started with 4.1 and I am getting very weak signal compared to my buddies iPhone which is also running 4.1. Which is weird .. I guess I will call in tommorow any ideas ??

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I never found a solution to this. Just had to reinstall everything from the discs that came with the Quad. Annoying.
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Context : Using a virtual characteristic, after upgrading from 3.1 to 7.0
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Hi James,
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Regards,
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Is anyone else experiencing WiFi issues after upgrading to 8.0.2 ?

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Iphone 5s have wifi issue after upgraded to ios8.

Iphone 5S have wifi issue afetr upgraded to IOS 8. Does Apple know about this?? Its really frustrating the signal is weak.

luckymacguy wrote:
If you look at google there are some problems with ios8 and it happens to be wifi issue for me.
If I look at google, I will find that people reporting problems with every version of iOS. And accounts of being abducted by aliens. Just because you are having a WiFi issue does not necessarily mean the issue is with iOS 8 (correlation does not prove causality). Until you've done proper trouble shooting (or had Apple do it for you if you don't feel equipped), it's almost impossible to say why you are having a problem.
My iPhone 5S is not having any issues with iOS 8.

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I am on the same spot inside the house and the 3gs cannot detect my connection.

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Same behavior from our WiFi at work -- I can no longer connect on the corporate WiFi from my office space!!
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