LinuxQuestions.org - Wireless is not working after update NetworkManager

Hi Team,

I am using CentOS-6
Earlier my wireless was working fine but after update NetworkManager its not working now.
If i click on NetworkManager icon on up right corner its show
"Wireless Network Disconnecte" is gred-out :(

I am able to access internet via wired network.
I have router at my home and its working fine. There is no any issue with it.

My details are as below.

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[root@batuk ~]# uname -a
Linux batuk 2.6.32-279.1.1.el6.x86_64 #1 SMP Tue Jul 10 13:47:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

[root@~]# lspci | grep -i broadcom
03:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)

[root@~]# lspci -vnn -d 14e4:
03:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c]
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f0400000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [58] Vendor Specific Information <?>
Capabilities: [e8] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel <?>
Capabilities: [160] Device Serial Number 1b-dd-cb-ff-ff-14-f0-7b
Capabilities: [16c] Power Budgeting <?>
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb

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Please help me to resolve issue.