Steps to analyze crash report from apple:
Copy the release .app file which was pushed to the appstore, the .dSYM file that was created at the time of release and the crash report receive from APPLE into a FOLDER.
OPEN terminal application and go to the folder created above (using CD command)
atos -arch armv7 -o YOURAPP.app/YOURAPP MEMORY_LOCATION_OF_CRASH.
The memory location should be the one at which the app crashed as per the report.
Ex: atos -arch armv7 -o 'app name.app'/'app name' 0x0003b508
This would show you the exact line, method name which resulted in crash.
Ex: [classname functionName:]; -510
if we use IPA for symbolicating - just rename the extention .ipa with .zip , extract it then we can get a Payload Folder which contain app. In this case we don't need .dSYM file.