Unhappy [Q] Focus doesn't work after 7.8 update

Guys,
I have tried to update my samsung focus to 7.8 using seveneighter tool. Though I could get the tile resizables, most options (call display, messages, settings menu) were not working. then I restored my phone to previous version of software using Zune assuming it will solve the issue, it went even worse. Software is reverted to 7.5, but Battery icon keeps blinking though the charger is connected and the options mentioned are not working in 7.5 too Could you please suggest a way to keep my phone back to working condition !!!