N900a Failed to Mount EFS

I woke up today and my Note 3 was dead. I assumed the battery died as that is in all likelihood what happened. I plugged my phone into the charger and attempted to turn it on. It stayed on the Samsung logo for several minutes. I then booted it into recovery mode, and noticed at the bottom, E: Failed to mount /efs (invalid argument). I attempted a cache wipe and at first it said failed to mount /cache, however another attempt and it completed without error. I then tried a reboot with the same problem. Next I tried a system/data wipe and got the same problem (failed to mount efs).

So, I used a 4 part Odin flash to 5.0 Lollipop OEM. This succeeded and upon reboot the phone got as far as the AT&T logo then hung again. Once in recovery I noticed the same E: Failed to mount /efs (invalid argument). I have searched on this and many other forums attempting to resolve this issue without success. I've been at this nonstop for 12 hours now. I know of a way to use adb to create a generic EFS folder, the problem is the phone is 100% stock, including no developer options(adb), custom recovery, etc. Not even busybox.

Anyone with any info on how I can unbrick this phone would greatly appreciated. Or even how I can use Odin to install safestrap w/ root thereby giving me the ability to mount the system with TWRP and send adb commands that way. To clarify, I have access to nothing but the stock recovery and download mode without ADB active on the phone. Thanks for your time.

Note 3 n900a root

Have searched and searched and can't find root for note 3 n900a.. Any one ???

[Q] Root N900a OC2?

I have searched the internet for hours now for a tutorial on a root for n900a OC2. Hoping someone on here could provide me with a tutorial or set me in the right direction. I have tried everything I can and I know if you keep trying random **** its going to end up bricking my phone. Thanks.

Is this n900a fixable? Modem/network problems

This is the first time I'm posting on a forum about this problem, thought I could tackle it myself.

Turns out I was wrong.

I bought a Samsung Galaxy Note 3 SM-N900A on eBay a couple weeks ago. I've been having a difficult time getting the phone to consistently read a sim card and provide steady service. I've researched a lot on this forum, droidviews, galaxynote3root, and so on.. and haven't been able to get it working. Though, I have at times been able to get service, including data. It's been intermittent and have repeated steps to try and get it working but they haven't worked. There are a few thing's I came across though that may help give me the right steps to fix this.

After a fresh tar file flash using Odin, the baseband is still unknown. I've tried this with a couple different versions such as NC2 (the one I can flash with), NL1 and OC1. I read somewhere that this means the modem file is corrupt, so I flashed the corresponding modem, and tried different ones. This is where I would sometimes have a working phone and sometimes not.

This is so confusing and there's a lot of information I could right on here but I'm really just looking for someone to help me fix this because its so frustrating. I could return it and I might, but my other phone has a cracked screen and lets not go there..

**The most interesting thing that's happening is after a "successful" flash at times the phone will have service, maybe for a very short time or even overnight.

PLeeeeaaaaasseeeee help

Can I root my Note 3 N900A from AT&T?

It's version 5.0, and I don't know where to start. Always been an iPhone guy but I love my Samsung phone now.