Phone update causing problems

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http://androidforums.com – I'm new to this forum, so this may be a known issue. I have a Motorola Bionic. Yesterday I installed a "system" update that was sent to me. I assume it was an android system update because the main screens have changed. Now I have 3 problems that I didn't have before. They are: 1. the built in email app will no longer work 2. the battery runs down quicker 3. signal strength meter shows weaker signal at locations where, before update, signal was strong What's going on here? How do I correct? Can I go back to my previous version? Thanks folks, Rocky (General)