New answers tagged device-firmware
If i underestand your question exactly, OTA update is not suggested. for many reasons, if the current installed rom from another region, maybe you cannot update it with OTA. (perhaps, android update for your region rom not availabe) it's better to download the Rom from Official and truted link and flash it on your phone for update. hope this helps.
I have found sammobile.com a very useful site for finding firmware for samsung devices. I don't think there is an official download site. Here is the firmware for SGH-M919 I have had the same issue before. Just trying the same process again fixed it for me. You can try wiping your cache and dalvik cache but I am not sure if that will make a difference. Then ...
You can get ClockWork Mod Recovery by installing it with the Rom Manager App, from GPlay or here: https://www.clockworkmod.com/rommanager or find TWRP (my personal preference) here: http://twrp.me/Devices/
I had this issue and took my battery, sim card, and memory card out for about two hours. When I put it back together, it booted right up and is working fine now.
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