How to restore android os on dell phones?

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After installing PCSync Tool " No update available". No firm upgrade available   more
descriptiontap the new sms message alert in tha notification widget on the home screens 786   more
Dell Aero can be ... maintenance operations on your phone as well as firmware ... phone and if there is an update available for your Android ... confirmation. [1]: dell.com/support/drivers/us/en">http://www.dell.com/support/drivers/us/en ...   more

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