MRC Project to ARC

Open project.pbxproj file in YourProjectName.xcodeproj with TextMate or other tool.

Replace -fobjc-arc flag

Find : (.*\.m.*PBXBuildFile.*)(setting.*"-fobjc-arc"; \};)(.*)
 
Replace : $1UngacyHateMRC$3

Set -fno-objc-arc flag

Find : (.*\.m.*PBXBuildFile(.(?! UngacyHateMRC))*)(.\};)

Replace : $1 settings = {COMPILER_FLAGS = "-fno-objc-arc"; }; $3

Clear Special flag

Find : UngacyHateMRC

Replace : //Empty String

iOS