同步firefox4
http://www.mozilla.com/en-US/firefox/sync/firstrun.html
Sync your Android
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Step 1.
Install Firefox 4 for Android by visiting Firefox.com/m on your phone’s default browser, or install it over-the air.
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Step 2.
Launch Firefox on your phone, swipe to Tools » Preferences and tap on Connect. A single-use sync code will appear.
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Step 3.
Then come back to the Firefox menu on your desktop, select Firefox » Options (Win) Preferences (Mac) » Sync » Add New Device and enter your sync code.