How identify firmware in no boot phone

Hello team i'd like to know how could i identify the firmware on some samsung that is not booting. For example I have an SGH-M819n galaxy mega the phone it is stuck on samsung logo. I want to flash it but I want to do it with the current firmware so i need to identify which one this phone has it now. I can boot in download mode and in recovery mode. Thanks in advance.

Sent from my iPhone using Tapatalk

This entry passed through the Full-Text RSS service - if this is your content and you're reading it on someone else's site, please read the FAQ at http://ift.tt/jcXqJW.

How identify firmware in no boot phone