Originally Posted by spirous
After the recovery mode also hanged, the device only displayed the firmware error page. When trying to hard reset (volume up & start button) I got an Android logo saying it was downloading (which it couldn't have been as it was not connected to anything).
Isn't that download mode....As in what you'd want to flash a rom with ODIN?
Did you try flashing the stock firmware back on it before you sent it in for repair?
I kinda messed up my i957 last week when playing around with it. I wasn't paying attention to the 3g vs LTE so it was my bad. Tried some stuff out and the tablet was whacky!
Wound up going to Samsung support page and hunted down original firmware and flashed with ODIN and all was well again.
Glad your back up and running