soft-bricked i747m

i had my s3 i747m on cm13. i was having a lot of problems with bluetooth. so i tried going back to stock firmware and i bricked my phone. i can still access download mode.

with odin running as admin or not, this is what it says when i try to install stock rom in download mode:

ODIN MODE
PRODUCT NAME: SGH-I747M
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
QUALCOMM SECUREBOOT: ENABLE
Warranty Bit: 1
BOOTLOADER RP SWREV: 2
SW REV CHECK FAIL : Fused 2 > Binary 0

i've tried looking for solutions, but all say the same thing...which is to use odin and install the stock rom file.

i had twrp recovery installed if that helps.

How do you unlock an i747M locked to Fido? [OctOS L 5.1.1]

So I'm planning to switch carriers and I'm wondering how I can unlock my i747M locked to Fido that's running OctOS L 5.1.1. If I have to downgrade, how do I transfer all my current app data and pic's. Also, is it possible to keep the unlock if you were to update you phone to a higher version or install a custom ROM or install the nandroid backup you made before unlocking? Please leave me with some important things to know about while unlocking your phone if possible!

i747m boot loop, download mode only - data recoverable?

So, a little background. Full stock recovery, latest Telus 4.4.2 firmware.

Phone may have suffered a drop and/or some water damage during an episode of blackout drunkenness. Yes, I know, I'm an idiot.

Worked fine for a day or two, then began randomly shutting off, seemingly at times when the phone's CPU was under stress. Keeping it in airplane mode seemed to help avoid the reboots somewhat but not completely.

This began right before I was leaving for vacation, and had no time to go replace it. Then, after successfully taking a bunch of awesome pictures while on vacation, the phone decides to go into a boot loop. Can only boot into download mode.

I've got another phone now, but would REALLY like to get the data off the phone if at all possible. I'm assuming there must be some hardware issue at this point causing the boot loop, so I'm guessing that restoring the phone to 100% original working order is probably out of the question.

Any suggestions? I'm guessing something got corrupted, but I'm wondering if maybe I can flash a new recovery or re flash the stock rom via odin and hope it boots up long enough to get the data off? Will it wipe all my data if i try to flash via Odin? Should I take it in for a JTAG? are there other options like getting someone to dump the data off the memory chip somehow?

Thanks in advance.