Depreciation method adjustments for previously closed periods

If we are in Jun-14 period in tax book , can we go back to previous closed periods and change the depreciation method for the assets and will it recalculate the deprecation from that date for those assets ?

We want to calculate the depreciation for the previous months as per the new depreciation method identified now. The adjusment entry should be made for each period that we closed previously.

Assume previously we used the wrong depreciation method. If this is not possible, do we need to go with yearly depreciation calendar instead of monthly calendar? If so, what are the pros and cons to have a monthly calendar in corp book and yearly calendar in tax book?