download mode boot loop problem

HI,

I have an SPH L720 that was working with the stock rom, I assume latest update but I'm not sure.

Something happened now it won't boot the OS, won't boot to recovery, it will boot to download mode but immediately reboots once in download mode.

I can't get odin to see it nor can I access it via adb sitting at adb wait-for-device while I put it into download mode.

It doesn't seem to matter if the sim chip/sd card are in or out same behavior. I'm sure the battery I'm using is charged.

Any suggestions on how to fix this? Ideally I'd like to get some photos off the internal sd card, or at the very least reflash the stock rom to make it usable again.

thanks

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